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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include <limits>
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#include <string>
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#include <utility>
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Try to start TTL earlier with kMinOverlappingRatio is used (#8749)
Summary:
Right now, when options.ttl is set, compactions are triggered around the time when TTL is reached. This might cause extra compactions which are often bursty. This commit tries to mitigate it by picking those files earlier in normal compaction picking process. This is only implemented using kMinOverlappingRatio with Leveled compaction as it is the default value and it is more complicated to change other styles.
When a file is aged more than ttl/2, RocksDB starts to boost the compaction priority of files in normal compaction picking process, and hope by the time TTL is reached, very few extra compaction is needed.
In order for this to work, another change is made: during a compaction, if an output level file is older than ttl/2, cut output files based on original boundary (if it is not in the last level). This is to make sure that after an old file is moved to the next level, and new data is merged from the upper level, the new data falling into this range isn't reset with old timestamp. Without this change, in many cases, most files from one level will keep having old timestamp, even if they have newer data and we stuck in it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8749
Test Plan: Add a unit test to test the boosting logic. Will add a unit test to test it end-to-end.
Reviewed By: jay-zhuang
Differential Revision: D30735261
fbshipit-source-id: 503c2d89250b22911eb99e72b379be154de3428e
3 years ago
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#include "db/compaction/compaction.h"
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#include "db/compaction/compaction_picker_fifo.h"
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#include "db/compaction/compaction_picker_level.h"
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#include "db/compaction/compaction_picker_universal.h"
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Try to start TTL earlier with kMinOverlappingRatio is used (#8749)
Summary:
Right now, when options.ttl is set, compactions are triggered around the time when TTL is reached. This might cause extra compactions which are often bursty. This commit tries to mitigate it by picking those files earlier in normal compaction picking process. This is only implemented using kMinOverlappingRatio with Leveled compaction as it is the default value and it is more complicated to change other styles.
When a file is aged more than ttl/2, RocksDB starts to boost the compaction priority of files in normal compaction picking process, and hope by the time TTL is reached, very few extra compaction is needed.
In order for this to work, another change is made: during a compaction, if an output level file is older than ttl/2, cut output files based on original boundary (if it is not in the last level). This is to make sure that after an old file is moved to the next level, and new data is merged from the upper level, the new data falling into this range isn't reset with old timestamp. Without this change, in many cases, most files from one level will keep having old timestamp, even if they have newer data and we stuck in it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8749
Test Plan: Add a unit test to test the boosting logic. Will add a unit test to test it end-to-end.
Reviewed By: jay-zhuang
Differential Revision: D30735261
fbshipit-source-id: 503c2d89250b22911eb99e72b379be154de3428e
3 years ago
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#include "db/compaction/file_pri.h"
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#include "rocksdb/advanced_options.h"
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#include "table/unique_id_impl.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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class CountingLogger : public Logger {
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public:
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using Logger::Logv;
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void Logv(const char* /*format*/, va_list /*ap*/) override { log_count++; }
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size_t log_count;
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};
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class CompactionPickerTestBase : public testing::Test {
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public:
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const Comparator* ucmp_;
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InternalKeyComparator icmp_;
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Options options_;
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ImmutableOptions ioptions_;
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MutableCFOptions mutable_cf_options_;
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MutableDBOptions mutable_db_options_;
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LevelCompactionPicker level_compaction_picker;
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std::string cf_name_;
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CountingLogger logger_;
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LogBuffer log_buffer_;
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uint32_t file_num_;
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CompactionOptionsFIFO fifo_options_;
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std::unique_ptr<VersionStorageInfo> vstorage_;
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std::vector<std::unique_ptr<FileMetaData>> files_;
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// does not own FileMetaData
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std::unordered_map<uint32_t, std::pair<FileMetaData*, int>> file_map_;
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// input files to compaction process.
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std::vector<CompactionInputFiles> input_files_;
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int compaction_level_start_;
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explicit CompactionPickerTestBase(const Comparator* _ucmp)
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: ucmp_(_ucmp),
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icmp_(ucmp_),
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options_(CreateOptions(ucmp_)),
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ioptions_(options_),
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mutable_cf_options_(options_),
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mutable_db_options_(),
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level_compaction_picker(ioptions_, &icmp_),
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cf_name_("dummy"),
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log_buffer_(InfoLogLevel::INFO_LEVEL, &logger_),
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file_num_(1),
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vstorage_(nullptr) {
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mutable_cf_options_.ttl = 0;
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mutable_cf_options_.periodic_compaction_seconds = 0;
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// ioptions_.compaction_pri = kMinOverlappingRatio has its own set of
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// tests to cover.
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ioptions_.compaction_pri = kByCompensatedSize;
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fifo_options_.max_table_files_size = 1;
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mutable_cf_options_.RefreshDerivedOptions(ioptions_);
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ioptions_.cf_paths.emplace_back("dummy",
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std::numeric_limits<uint64_t>::max());
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}
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~CompactionPickerTestBase() override {}
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void NewVersionStorage(int num_levels, CompactionStyle style) {
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DeleteVersionStorage();
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options_.num_levels = num_levels;
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Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
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vstorage_.reset(new VersionStorageInfo(
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&icmp_, ucmp_, options_.num_levels, style, nullptr, false,
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EpochNumberRequirement::kMustPresent));
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vstorage_->PrepareForVersionAppend(ioptions_, mutable_cf_options_);
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}
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// Create a new VersionStorageInfo object so we can add mode files and then
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// merge it with the existing VersionStorageInfo
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void AddVersionStorage() {
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temp_vstorage_.reset(new VersionStorageInfo(
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&icmp_, ucmp_, options_.num_levels, ioptions_.compaction_style,
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Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
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vstorage_.get(), false, EpochNumberRequirement::kMustPresent));
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}
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void DeleteVersionStorage() {
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vstorage_.reset();
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temp_vstorage_.reset();
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files_.clear();
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file_map_.clear();
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input_files_.clear();
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}
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// REQUIRES: smallest and largest are c-style strings ending with '\0'
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void Add(int level, uint32_t file_number, const char* smallest,
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const char* largest, uint64_t file_size = 1, uint32_t path_id = 0,
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SequenceNumber smallest_seq = 100, SequenceNumber largest_seq = 100,
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size_t compensated_file_size = 0, bool marked_for_compact = false,
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Temperature temperature = Temperature::kUnknown,
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uint64_t oldest_ancestor_time = kUnknownOldestAncesterTime,
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Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Slice ts_of_smallest = Slice(), Slice ts_of_largest = Slice(),
|
|
|
|
|
uint64_t epoch_number = kUnknownEpochNumber) {
|
|
|
|
|
assert(ts_of_smallest.size() == ucmp_->timestamp_size());
|
|
|
|
|
assert(ts_of_largest.size() == ucmp_->timestamp_size());
|
|
|
|
|
|
|
|
|
|
VersionStorageInfo* vstorage;
|
|
|
|
|
if (temp_vstorage_) {
|
|
|
|
|
vstorage = temp_vstorage_.get();
|
|
|
|
|
} else {
|
|
|
|
|
vstorage = vstorage_.get();
|
|
|
|
|
}
|
|
|
|
|
assert(level < vstorage->num_levels());
|
|
|
|
|
char* smallest_key_buf = nullptr;
|
|
|
|
|
char* largest_key_buf = nullptr;
|
|
|
|
|
|
|
|
|
|
if (!ts_of_smallest.empty()) {
|
|
|
|
|
smallest_key_buf = new char[strlen(smallest) + ucmp_->timestamp_size()];
|
|
|
|
|
memcpy(smallest_key_buf, smallest, strlen(smallest));
|
|
|
|
|
memcpy(smallest_key_buf + strlen(smallest), ts_of_smallest.data(),
|
|
|
|
|
ucmp_->timestamp_size());
|
|
|
|
|
largest_key_buf = new char[strlen(largest) + ucmp_->timestamp_size()];
|
|
|
|
|
memcpy(largest_key_buf, largest, strlen(largest));
|
|
|
|
|
memcpy(largest_key_buf + strlen(largest), ts_of_largest.data(),
|
|
|
|
|
ucmp_->timestamp_size());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
InternalKey smallest_ikey = InternalKey(
|
|
|
|
|
smallest_key_buf ? Slice(smallest_key_buf,
|
|
|
|
|
ucmp_->timestamp_size() + strlen(smallest))
|
|
|
|
|
: smallest,
|
|
|
|
|
smallest_seq, kTypeValue);
|
|
|
|
|
InternalKey largest_ikey = InternalKey(
|
|
|
|
|
largest_key_buf
|
|
|
|
|
? Slice(largest_key_buf, ucmp_->timestamp_size() + strlen(largest))
|
|
|
|
|
: largest,
|
|
|
|
|
largest_seq, kTypeValue);
|
|
|
|
|
|
|
|
|
|
FileMetaData* f = new FileMetaData(
|
|
|
|
|
file_number, path_id, file_size, smallest_ikey, largest_ikey,
|
|
|
|
|
smallest_seq, largest_seq, marked_for_compact, temperature,
|
|
|
|
|
kInvalidBlobFileNumber, kUnknownOldestAncesterTime,
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
kUnknownFileCreationTime, epoch_number, kUnknownFileChecksum,
|
|
|
|
|
kUnknownFileChecksumFuncName, kNullUniqueId64x2);
|
|
|
|
|
f->compensated_file_size =
|
|
|
|
|
(compensated_file_size != 0) ? compensated_file_size : file_size;
|
|
|
|
|
f->oldest_ancester_time = oldest_ancestor_time;
|
|
|
|
|
vstorage->AddFile(level, f);
|
|
|
|
|
files_.emplace_back(f);
|
|
|
|
|
file_map_.insert({file_number, {f, level}});
|
|
|
|
|
|
|
|
|
|
delete[] smallest_key_buf;
|
|
|
|
|
delete[] largest_key_buf;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void SetCompactionInputFilesLevels(int level_count, int start_level) {
|
|
|
|
|
input_files_.resize(level_count);
|
|
|
|
|
for (int i = 0; i < level_count; ++i) {
|
|
|
|
|
input_files_[i].level = start_level + i;
|
|
|
|
|
}
|
|
|
|
|
compaction_level_start_ = start_level;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void AddToCompactionFiles(uint32_t file_number) {
|
|
|
|
|
auto iter = file_map_.find(file_number);
|
|
|
|
|
assert(iter != file_map_.end());
|
|
|
|
|
int level = iter->second.second;
|
|
|
|
|
assert(level < vstorage_->num_levels());
|
|
|
|
|
input_files_[level - compaction_level_start_].files.emplace_back(
|
|
|
|
|
iter->second.first);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void UpdateVersionStorageInfo() {
|
|
|
|
|
if (temp_vstorage_) {
|
|
|
|
|
VersionBuilder builder(FileOptions(), &ioptions_, nullptr,
|
|
|
|
|
vstorage_.get(), nullptr);
|
|
|
|
|
ASSERT_OK(builder.SaveTo(temp_vstorage_.get()));
|
|
|
|
|
vstorage_ = std::move(temp_vstorage_);
|
|
|
|
|
}
|
|
|
|
|
vstorage_->PrepareForVersionAppend(ioptions_, mutable_cf_options_);
|
|
|
|
|
vstorage_->ComputeCompactionScore(ioptions_, mutable_cf_options_);
|
|
|
|
|
vstorage_->SetFinalized();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
Options CreateOptions(const Comparator* ucmp) const {
|
|
|
|
|
Options opts;
|
|
|
|
|
opts.comparator = ucmp;
|
|
|
|
|
return opts;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<VersionStorageInfo> temp_vstorage_;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
class CompactionPickerTest : public CompactionPickerTestBase {
|
|
|
|
|
public:
|
|
|
|
|
explicit CompactionPickerTest()
|
|
|
|
|
: CompactionPickerTestBase(BytewiseComparator()) {}
|
|
|
|
|
|
|
|
|
|
~CompactionPickerTest() override {}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
class CompactionPickerU64TsTest : public CompactionPickerTestBase {
|
|
|
|
|
public:
|
|
|
|
|
explicit CompactionPickerU64TsTest()
|
|
|
|
|
: CompactionPickerTestBase(test::BytewiseComparatorWithU64TsWrapper()) {}
|
|
|
|
|
|
|
|
|
|
~CompactionPickerU64TsTest() override {}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Empty) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Single) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
Add(0, 1U, "p", "q");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level0Trigger) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(0, 2U, "200", "250");
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level1Trigger) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(1, 66U, "150", "200", 1000000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level1Trigger2) {
|
|
|
|
|
mutable_cf_options_.target_file_size_base = 10000000000;
|
|
|
|
|
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(1, 66U, "150", "200", 1000000001U);
|
|
|
|
|
Add(1, 88U, "201", "300", 1000000000U);
|
|
|
|
|
Add(2, 6U, "150", "179", 1000000000U);
|
|
|
|
|
Add(2, 7U, "180", "220", 1000000000U);
|
|
|
|
|
Add(2, 8U, "221", "300", 1000000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(uint64_t{1073741824}, compaction->OutputFilePreallocationSize());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, LevelMaxScore) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.target_file_size_base = 10000000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
|
|
|
|
|
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
|
|
|
|
|
Add(0, 1U, "150", "200", 1000000U);
|
|
|
|
|
// Level 1 score 1.2
|
|
|
|
|
Add(1, 66U, "150", "200", 6000000U);
|
|
|
|
|
Add(1, 88U, "201", "300", 6000000U);
|
|
|
|
|
// Level 2 score 1.8. File 7 is the largest. Should be picked
|
|
|
|
|
Add(2, 6U, "150", "179", 60000000U);
|
|
|
|
|
Add(2, 7U, "180", "220", 60000001U);
|
|
|
|
|
Add(2, 8U, "221", "300", 60000000U);
|
|
|
|
|
// Level 3 score slightly larger than 1
|
|
|
|
|
Add(3, 26U, "150", "170", 260000000U);
|
|
|
|
|
Add(3, 27U, "171", "179", 260000000U);
|
|
|
|
|
Add(3, 28U, "191", "220", 260000000U);
|
|
|
|
|
Add(3, 29U, "221", "300", 260000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(mutable_cf_options_.target_file_size_base +
|
|
|
|
|
mutable_cf_options_.target_file_size_base / 10,
|
|
|
|
|
compaction->OutputFilePreallocationSize());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, NeedsCompactionLevel) {
|
|
|
|
|
const int kLevels = 6;
|
|
|
|
|
const int kFileCount = 20;
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
|
|
|
|
|
for (int level = 0; level < kLevels - 1; ++level) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
NewVersionStorage(kLevels, kCompactionStyleLevel);
|
|
|
|
|
uint64_t file_size = vstorage_->MaxBytesForLevel(level) * 2 / kFileCount;
|
|
|
|
|
for (int file_count = 1; file_count <= kFileCount; ++file_count) {
|
|
|
|
|
// start a brand new version in each test.
|
|
|
|
|
NewVersionStorage(kLevels, kCompactionStyleLevel);
|
|
|
|
|
for (int i = 0; i < file_count; ++i) {
|
|
|
|
|
Add(level, i, std::to_string((i + 100) * 1000).c_str(),
|
|
|
|
|
std::to_string((i + 100) * 1000 + 999).c_str(), file_size, 0,
|
|
|
|
|
i * 100, i * 100 + 99);
|
|
|
|
|
}
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(vstorage_->CompactionScoreLevel(0), level);
|
|
|
|
|
ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
vstorage_->CompactionScore(0) >= 1);
|
|
|
|
|
// release the version storage
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level0TriggerDynamic) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(0, 2U, "200", "250");
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
Make Compaction class easier to use
Summary:
The goal of this diff is to make Compaction class easier to use. This should also make new compaction algorithms easier to write (like CompactFiles from @yhchiang and dynamic leveled and multi-leveled universal from @sdong).
Here are couple of things demonstrating that Compaction class is hard to use:
1. we have two constructors of Compaction class
2. there's this thing called grandparents_, but it appears to only be setup for leveled compaction and not compactfiles
3. it's easy to introduce a subtle and dangerous bug like this: D36225
4. SetupBottomMostLevel() is hard to understand and it shouldn't be. See this comment: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction.cc#L236-L241. It also made it harder for @yhchiang to write CompactFiles, as evidenced by this: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction_picker.cc#L204-L210
The problem is that we create Compaction object, which holds a lot of state, and then pass it around to some functions. After those functions are done mutating, then we call couple of functions on Compaction object, like SetupBottommostLevel() and MarkFilesBeingCompacted(). It is very hard to see what's happening with all that Compaction's state while it's travelling across different functions. If you're writing a new PickCompaction() function you need to try really hard to understand what are all the functions you need to run on Compaction object and what state you need to setup.
My proposed solution is to make important parts of Compaction immutable after construction. PickCompaction() should calculate compaction inputs and then pass them onto Compaction object once they are finalized. That makes it easy to create a new compaction -- just provide all the parameters to the constructor and you're done. No need to call confusing functions after you created your object.
This diff doesn't fully achieve that goal, but it comes pretty close. Here are some of the changes:
* have one Compaction constructor instead of two.
* inputs_ is constant after construction
* MarkFilesBeingCompacted() is now private to Compaction class and automatically called on construction/destruction.
* SetupBottommostLevel() is gone. Compaction figures it out on its own based on the input.
* CompactionPicker's functions are not passing around Compaction object anymore. They are only passing around the state that they need.
Test Plan:
make check
make asan_check
make valgrind_check
Reviewers: rven, anthony, sdong, yhchiang
Reviewed By: yhchiang
Subscribers: sdong, yhchiang, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D36687
10 years ago
|
|
|
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_EQ(num_levels - 1, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level0TriggerDynamic2) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(0, 2U, "200", "250");
|
|
|
|
|
Add(num_levels - 1, 3U, "200", "250", 300U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(vstorage_->base_level(), num_levels - 2);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
Make Compaction class easier to use
Summary:
The goal of this diff is to make Compaction class easier to use. This should also make new compaction algorithms easier to write (like CompactFiles from @yhchiang and dynamic leveled and multi-leveled universal from @sdong).
Here are couple of things demonstrating that Compaction class is hard to use:
1. we have two constructors of Compaction class
2. there's this thing called grandparents_, but it appears to only be setup for leveled compaction and not compactfiles
3. it's easy to introduce a subtle and dangerous bug like this: D36225
4. SetupBottomMostLevel() is hard to understand and it shouldn't be. See this comment: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction.cc#L236-L241. It also made it harder for @yhchiang to write CompactFiles, as evidenced by this: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction_picker.cc#L204-L210
The problem is that we create Compaction object, which holds a lot of state, and then pass it around to some functions. After those functions are done mutating, then we call couple of functions on Compaction object, like SetupBottommostLevel() and MarkFilesBeingCompacted(). It is very hard to see what's happening with all that Compaction's state while it's travelling across different functions. If you're writing a new PickCompaction() function you need to try really hard to understand what are all the functions you need to run on Compaction object and what state you need to setup.
My proposed solution is to make important parts of Compaction immutable after construction. PickCompaction() should calculate compaction inputs and then pass them onto Compaction object once they are finalized. That makes it easy to create a new compaction -- just provide all the parameters to the constructor and you're done. No need to call confusing functions after you created your object.
This diff doesn't fully achieve that goal, but it comes pretty close. Here are some of the changes:
* have one Compaction constructor instead of two.
* inputs_ is constant after construction
* MarkFilesBeingCompacted() is now private to Compaction class and automatically called on construction/destruction.
* SetupBottommostLevel() is gone. Compaction figures it out on its own based on the input.
* CompactionPicker's functions are not passing around Compaction object anymore. They are only passing around the state that they need.
Test Plan:
make check
make asan_check
make valgrind_check
Reviewers: rven, anthony, sdong, yhchiang
Reviewed By: yhchiang
Subscribers: sdong, yhchiang, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D36687
10 years ago
|
|
|
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_EQ(num_levels - 2, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level0TriggerDynamic3) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(0, 2U, "200", "250");
|
|
|
|
|
Add(num_levels - 1, 3U, "200", "250", 300U);
|
|
|
|
|
Add(num_levels - 1, 4U, "300", "350", 3000U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(vstorage_->base_level(), num_levels - 3);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
Make Compaction class easier to use
Summary:
The goal of this diff is to make Compaction class easier to use. This should also make new compaction algorithms easier to write (like CompactFiles from @yhchiang and dynamic leveled and multi-leveled universal from @sdong).
Here are couple of things demonstrating that Compaction class is hard to use:
1. we have two constructors of Compaction class
2. there's this thing called grandparents_, but it appears to only be setup for leveled compaction and not compactfiles
3. it's easy to introduce a subtle and dangerous bug like this: D36225
4. SetupBottomMostLevel() is hard to understand and it shouldn't be. See this comment: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction.cc#L236-L241. It also made it harder for @yhchiang to write CompactFiles, as evidenced by this: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction_picker.cc#L204-L210
The problem is that we create Compaction object, which holds a lot of state, and then pass it around to some functions. After those functions are done mutating, then we call couple of functions on Compaction object, like SetupBottommostLevel() and MarkFilesBeingCompacted(). It is very hard to see what's happening with all that Compaction's state while it's travelling across different functions. If you're writing a new PickCompaction() function you need to try really hard to understand what are all the functions you need to run on Compaction object and what state you need to setup.
My proposed solution is to make important parts of Compaction immutable after construction. PickCompaction() should calculate compaction inputs and then pass them onto Compaction object once they are finalized. That makes it easy to create a new compaction -- just provide all the parameters to the constructor and you're done. No need to call confusing functions after you created your object.
This diff doesn't fully achieve that goal, but it comes pretty close. Here are some of the changes:
* have one Compaction constructor instead of two.
* inputs_ is constant after construction
* MarkFilesBeingCompacted() is now private to Compaction class and automatically called on construction/destruction.
* SetupBottommostLevel() is gone. Compaction figures it out on its own based on the input.
* CompactionPicker's functions are not passing around Compaction object anymore. They are only passing around the state that they need.
Test Plan:
make check
make asan_check
make valgrind_check
Reviewers: rven, anthony, sdong, yhchiang
Reviewed By: yhchiang
Subscribers: sdong, yhchiang, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D36687
10 years ago
|
|
|
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_EQ(num_levels - 3, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, Level0TriggerDynamic4) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(0, 2U, "200", "250");
|
|
|
|
|
Add(num_levels - 1, 3U, "200", "250", 300U);
|
|
|
|
|
Add(num_levels - 1, 4U, "300", "350", 3000U);
|
|
|
|
|
Add(num_levels - 3, 5U, "150", "180", 3U);
|
|
|
|
|
Add(num_levels - 3, 6U, "181", "300", 3U);
|
|
|
|
|
Add(num_levels - 3, 7U, "400", "450", 3U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(vstorage_->base_level(), num_levels - 3);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
Make Compaction class easier to use
Summary:
The goal of this diff is to make Compaction class easier to use. This should also make new compaction algorithms easier to write (like CompactFiles from @yhchiang and dynamic leveled and multi-leveled universal from @sdong).
Here are couple of things demonstrating that Compaction class is hard to use:
1. we have two constructors of Compaction class
2. there's this thing called grandparents_, but it appears to only be setup for leveled compaction and not compactfiles
3. it's easy to introduce a subtle and dangerous bug like this: D36225
4. SetupBottomMostLevel() is hard to understand and it shouldn't be. See this comment: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction.cc#L236-L241. It also made it harder for @yhchiang to write CompactFiles, as evidenced by this: https://github.com/facebook/rocksdb/blob/afbafeaeaebfd27a0f3e992fee8e0c57d07658fa/db/compaction_picker.cc#L204-L210
The problem is that we create Compaction object, which holds a lot of state, and then pass it around to some functions. After those functions are done mutating, then we call couple of functions on Compaction object, like SetupBottommostLevel() and MarkFilesBeingCompacted(). It is very hard to see what's happening with all that Compaction's state while it's travelling across different functions. If you're writing a new PickCompaction() function you need to try really hard to understand what are all the functions you need to run on Compaction object and what state you need to setup.
My proposed solution is to make important parts of Compaction immutable after construction. PickCompaction() should calculate compaction inputs and then pass them onto Compaction object once they are finalized. That makes it easy to create a new compaction -- just provide all the parameters to the constructor and you're done. No need to call confusing functions after you created your object.
This diff doesn't fully achieve that goal, but it comes pretty close. Here are some of the changes:
* have one Compaction constructor instead of two.
* inputs_ is constant after construction
* MarkFilesBeingCompacted() is now private to Compaction class and automatically called on construction/destruction.
* SetupBottommostLevel() is gone. Compaction figures it out on its own based on the input.
* CompactionPicker's functions are not passing around Compaction object anymore. They are only passing around the state that they need.
Test Plan:
make check
make asan_check
make valgrind_check
Reviewers: rven, anthony, sdong, yhchiang
Reviewed By: yhchiang
Subscribers: sdong, yhchiang, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D36687
10 years ago
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(num_levels - 3, compaction->level(1));
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2, static_cast<int>(compaction->num_input_levels()));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_EQ(num_levels - 3, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, LevelTriggerDynamic4) {
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200");
|
|
|
|
|
Add(num_levels - 1, 2U, "200", "250", 300U);
|
|
|
|
|
Add(num_levels - 1, 3U, "300", "350", 3000U);
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
Add(num_levels - 1, 4U, "400", "450", 3U);
|
|
|
|
|
Add(num_levels - 2, 5U, "150", "180", 300U);
|
|
|
|
|
Add(num_levels - 2, 6U, "181", "350", 500U);
|
|
|
|
|
Add(num_levels - 2, 7U, "400", "450", 200U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(0, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_levels());
|
options.level_compaction_dynamic_level_bytes to allow RocksDB to pick size bases of levels dynamically.
Summary:
When having fixed max_bytes_for_level_base, the ratio of size of largest level and the second one can range from 0 to the multiplier. This makes LSM tree frequently irregular and unpredictable. It can also cause poor space amplification in some cases.
In this improvement (proposed by Igor Kabiljo), we introduce a parameter option.level_compaction_use_dynamic_max_bytes. When turning it on, RocksDB is free to pick a level base in the range of (options.max_bytes_for_level_base/options.max_bytes_for_level_multiplier, options.max_bytes_for_level_base] so that real level ratios are close to options.max_bytes_for_level_multiplier.
Test Plan: New unit tests and pass tests suites including valgrind.
Reviewers: MarkCallaghan, rven, yhchiang, igor, ikabiljo
Reviewed By: ikabiljo
Subscribers: yoshinorim, ikabiljo, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D31437
10 years ago
|
|
|
ASSERT_EQ(num_levels - 1, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Universal and FIFO Compactions are not supported in ROCKSDB_LITE
|
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
|
TEST_F(CompactionPickerTest, NeedsCompactionUniversal) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
// must return false when there's no files.
|
|
|
|
|
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
false);
|
|
|
|
|
|
|
|
|
|
// verify the trigger given different number of L0 files.
|
|
|
|
|
for (int i = 1;
|
|
|
|
|
i <= mutable_cf_options_.level0_file_num_compaction_trigger * 2; ++i) {
|
Add experimental API MarkForCompaction()
Summary:
Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys).
All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart.
MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction.
Test Plan: added a new unit test
Reviewers: yhchiang, rven, MarkCallaghan, sdong
Reviewed By: sdong
Subscribers: yoshinorim, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D37083
10 years ago
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
Add(0, i, std::to_string((i + 100) * 1000).c_str(),
|
|
|
|
|
std::to_string((i + 100) * 1000 + 999).c_str(), 1000000, 0, i * 100,
|
|
|
|
|
i * 100 + 99);
|
Add experimental API MarkForCompaction()
Summary:
Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys).
All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart.
MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction.
Test Plan: added a new unit test
Reviewers: yhchiang, rven, MarkCallaghan, sdong
Reviewed By: sdong
Subscribers: yoshinorim, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D37083
10 years ago
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
vstorage_->CompactionScore(0) >= 1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionUniversalIngestBehindReservedLevel) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
ioptions_.allow_ingest_behind = true;
|
|
|
|
|
ioptions_.num_levels = 3;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
// must return false when there's no files.
|
|
|
|
|
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
false);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(3, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
|
|
|
|
|
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
|
|
|
|
|
Add(1, 5U, "100", "151", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(1, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(2, 6U, "120", "200", kFileSize, 0, 20, 100);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
// output level should be the one above the bottom-most
|
|
|
|
|
ASSERT_EQ(1, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
// Tests if the files can be trivially moved in multi level
|
|
|
|
|
// universal compaction when allow_trivial_move option is set
|
|
|
|
|
// In this test as the input files overlaps, they cannot
|
|
|
|
|
// be trivially moved.
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CannotTrivialMoveUniversal) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.allow_trivial_move = true;
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
// must return false when there's no files.
|
|
|
|
|
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
false);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(3, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
|
|
|
|
|
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
|
|
|
|
|
Add(1, 5U, "100", "151", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(1, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(2, 6U, "120", "200", kFileSize, 0, 20, 100);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(!compaction->is_trivial_move());
|
|
|
|
|
}
|
|
|
|
|
// Tests if the files can be trivially moved in multi level
|
|
|
|
|
// universal compaction when allow_trivial_move option is set
|
|
|
|
|
// In this test as the input files doesn't overlaps, they should
|
|
|
|
|
// be trivially moved.
|
|
|
|
|
TEST_F(CompactionPickerTest, AllowsTrivialMoveUniversal) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.allow_trivial_move = true;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(3, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
|
|
|
|
|
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
|
|
|
|
|
Add(1, 5U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(2, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction->is_trivial_move());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction1) {
|
|
|
|
|
// The case where universal periodic compaction can be picked
|
|
|
|
|
// with some newer files being compacted.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
|
|
|
|
|
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
|
|
|
|
|
Add(3, 5U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 6U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
file_map_[2].first->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(4, file_map_[3].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction2) {
|
|
|
|
|
// The case where universal periodic compaction does not
|
|
|
|
|
// pick up only level to compact if it doesn't cover
|
|
|
|
|
// any file marked as periodic compaction.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(3, 5U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 6U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
file_map_[5].first->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(0, file_map_[1].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_FALSE(compaction);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction3) {
|
|
|
|
|
// The case where universal periodic compaction does not
|
|
|
|
|
// pick up only the last sorted run which is an L0 file if it isn't
|
|
|
|
|
// marked as periodic compaction.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 5U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(0, 6U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
file_map_[5].first->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(0, file_map_[1].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_FALSE(compaction);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction4) {
|
|
|
|
|
// The case where universal periodic compaction couldn't form
|
|
|
|
|
// a compaction that includes any file marked for periodic compaction.
|
|
|
|
|
// Right now we form the compaction anyway if it is more than one
|
|
|
|
|
// sorted run. Just put the case here to validate that it doesn't
|
|
|
|
|
// crash.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(2, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 5U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 3U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 6U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
file_map_[2].first->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(0, file_map_[2].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(!compaction ||
|
|
|
|
|
compaction->start_level() != compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction5) {
|
|
|
|
|
// Test single L0 file periodic compaction triggering.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 6U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(0, file_map_[6].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalPeriodicCompaction6) {
|
|
|
|
|
// Test single sorted run non-L0 periodic compaction
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 1000;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(4, 5U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(4, 6U, "350", "400", kFileSize, 0, 500, 550);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
vstorage_->TEST_AddFileMarkedForPeriodicCompaction(4, file_map_[6].first);
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
TEST_F(CompactionPickerTest, UniversalIncrementalSpace1) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 555555;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.incremental = true;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal
|
|
|
|
|
.max_size_amplification_percent = 30;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(2, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 5U, "310", "380", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 6U, "410", "880", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 7U, "910", "980", 1, 0, 200, 251);
|
|
|
|
|
Add(4, 10U, "201", "250", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 11U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 12U, "401", "450", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 13U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 14U, "801", "850", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 15U, "901", "950", kFileSize, 0, 101, 150);
|
|
|
|
|
// Add(4, 15U, "960", "970", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(3, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
// ASSERT_EQ(4U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(11U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(12U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(13U, compaction->input(1, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(14U, compaction->input(1, 3)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalIncrementalSpace2) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 400000;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.incremental = true;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal
|
|
|
|
|
.max_size_amplification_percent = 30;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(1, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(2, 5U, "310", "380", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(2, 6U, "410", "880", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(2, 7U, "910", "980", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 10U, "201", "250", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 11U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 12U, "401", "450", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 13U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 14U, "801", "850", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 15U, "901", "950", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(2, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(15U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalIncrementalSpace3) {
|
|
|
|
|
// Test bottom level files falling between gaps between two upper level
|
|
|
|
|
// files
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 300000;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.incremental = true;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal
|
|
|
|
|
.max_size_amplification_percent = 30;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(2, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 5U, "000", "180", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 6U, "181", "190", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 7U, "710", "810", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 8U, "820", "830", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(3, 9U, "900", "991", kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 10U, "201", "250", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 11U, "301", "350", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 12U, "401", "450", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 13U, "501", "750", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 14U, "801", "850", kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 15U, "901", "950", kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(2, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(0, compaction->num_input_files(2));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalIncrementalSpace4) {
|
|
|
|
|
// Test compaction candidates always cover many files.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 3200000;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.incremental = true;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal
|
|
|
|
|
.max_size_amplification_percent = 30;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(2, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
|
|
|
|
|
// Generate files like following:
|
|
|
|
|
// L3: (1101, 1180) (1201, 1280) ... (7901, 7908)
|
|
|
|
|
// L4: (1130, 1150) (1160, 1210) (1230, 1250) (1260 1310) ... (7960, 8010)
|
|
|
|
|
for (int i = 11; i < 79; i++) {
|
|
|
|
|
Add(3, 100 + i * 3, std::to_string(i * 100).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 80).c_str(), kFileSize, 0, 200, 251);
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
// Add a tie breaker
|
|
|
|
|
if (i == 66) {
|
|
|
|
|
Add(3, 10000U, "6690", "6699", kFileSize, 0, 200, 251);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Add(4, 100 + i * 3 + 1, std::to_string(i * 100 + 30).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 50).c_str(), kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 100 + i * 3 + 2, std::to_string(i * 100 + 60).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 110).c_str(), kFileSize, 0, 200, 251);
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
}
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(3, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(6U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(100 + 62U * 3, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(10000U, compaction->input(0, 5)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(11, compaction->num_input_files(1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalIncrementalSpace5) {
|
|
|
|
|
// Test compaction candidates always cover many files with some single
|
|
|
|
|
// files larger than size threshold.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 3200000;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal.incremental = true;
|
|
|
|
|
mutable_cf_options_.compaction_options_universal
|
|
|
|
|
.max_size_amplification_percent = 30;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(2, 2U, "010", "080", kFileSize, 0, 200, 251);
|
|
|
|
|
|
|
|
|
|
// Generate files like following:
|
|
|
|
|
// L3: (1101, 1180) (1201, 1280) ... (7901, 7908)
|
|
|
|
|
// L4: (1130, 1150) (1160, 1210) (1230, 1250) (1260 1310) ... (7960, 8010)
|
|
|
|
|
for (int i = 11; i < 70; i++) {
|
|
|
|
|
Add(3, 100 + i * 3, std::to_string(i * 100).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 80).c_str(),
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
i % 10 == 9 ? kFileSize * 100 : kFileSize, 0, 200, 251);
|
|
|
|
|
|
|
|
|
|
Add(4, 100 + i * 3 + 1, std::to_string(i * 100 + 30).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 50).c_str(), kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 100 + i * 3 + 2, std::to_string(i * 100 + 60).c_str(),
|
|
|
|
|
std::to_string(i * 100 + 110).c_str(), kFileSize, 0, 200, 251);
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
}
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Incremental Space Amp Compactions in Universal Style (#8655)
Summary:
This commit introduces incremental compaction in univeral style for space amplification. This follows the first improvement mentioned in https://rocksdb.org/blog/2021/04/12/universal-improvements.html . The implemention simply picks up files about size of max_compaction_bytes to compact and execute if the penalty is not too big. More optimizations can be done in the future, e.g. prioritizing between this compaction and other types. But for now, the feature is supposed to be functional and can often reduce frequency of full compactions, although it can introduce penalty.
In order to add cut files more efficiently so that more files from upper levels can be included, SST file cutting threshold (for current file + overlapping parent level files) is set to 1.5X of target file size. A 2MB target file size will generate files like this: https://gist.github.com/siying/29d2676fba417404f3c95e6c013c7de8 Number of files indeed increases but it is not out of control.
Two set of write benchmarks are run:
1. For ingestion rate limited scenario, we can see full compaction is mostly eliminated: https://gist.github.com/siying/959bc1186066906831cf4c808d6e0a19 . The write amp increased from 7.7 to 9.4, as expected. After applying file cutting, the number is improved to 8.9. In another benchmark, the write amp is even better with the incremental approach: https://gist.github.com/siying/d1c16c286d7c59c4d7bba718ca198163
2. For ingestion rate unlimited scenario, incremental compaction turns out to be too expensive most of the time and is not executed, as expected.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8655
Test Plan: Add unit tests to the functionality.
Reviewed By: ajkr
Differential Revision: D31787034
fbshipit-source-id: ce813e63b15a61d5a56e97bf8902a1b28e011beb
3 years ago
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(3, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(6U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(100 + 14 * 3, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(100 + 19 * 3, compaction->input(0, 5)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(13, compaction->num_input_files(1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, NeedsCompactionFIFO) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const int kFileCount =
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger * 3;
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * kFileCount / 2;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
Add experimental API MarkForCompaction()
Summary:
Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys).
All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart.
MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction.
Test Plan: added a new unit test
Reviewers: yhchiang, rven, MarkCallaghan, sdong
Reviewed By: sdong
Subscribers: yoshinorim, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D37083
10 years ago
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
// must return false when there's no files.
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), false);
|
|
|
|
|
|
|
|
|
|
// verify whether compaction is needed based on the current
|
|
|
|
|
// size of L0 files.
|
|
|
|
|
for (int i = 1; i <= kFileCount; ++i) {
|
Add experimental API MarkForCompaction()
Summary:
Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys).
All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart.
MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction.
Test Plan: added a new unit test
Reviewers: yhchiang, rven, MarkCallaghan, sdong
Reviewed By: sdong
Subscribers: yoshinorim, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D37083
10 years ago
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
Add(0, i, std::to_string((i + 100) * 1000).c_str(),
|
|
|
|
|
std::to_string((i + 100) * 1000 + 999).c_str(), kFileSize, 0, i * 100,
|
|
|
|
|
i * 100 + 99);
|
Add experimental API MarkForCompaction()
Summary:
Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys).
All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart.
MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction.
Test Plan: added a new unit test
Reviewers: yhchiang, rven, MarkCallaghan, sdong
Reviewed By: sdong
Subscribers: yoshinorim, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D37083
10 years ago
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()),
|
|
|
|
|
vstorage_->CompactionScore(0) >= 1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarm1) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 100;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 3000);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarm2) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 100;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 3000);
|
|
|
|
|
Add(0, 2U, "200", "300", 4 * kFileSize, 0, 2100, 2200, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 4000);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarmMaxSize) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 9;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 3000);
|
|
|
|
|
Add(0, 2U, "200", "300", 4 * kFileSize, 0, 2100, 2200, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 4000);
|
|
|
|
|
Add(0, 1U, "200", "300", 4 * kFileSize, 0, 2000, 2100, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 5000);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarmWithExistingWarm) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 100;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 3000);
|
|
|
|
|
Add(0, 2U, "200", "300", 4 * kFileSize, 0, 2100, 2200, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 4000);
|
|
|
|
|
Add(0, 1U, "200", "300", 4 * kFileSize, 0, 2000, 2100, 0, true,
|
|
|
|
|
Temperature::kWarm, threshold_time - 5000);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarmWithOngoing) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 100;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 3000);
|
|
|
|
|
Add(0, 2U, "200", "300", 4 * kFileSize, 0, 2100, 2200, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 4000);
|
|
|
|
|
Add(0, 1U, "200", "300", 4 * kFileSize, 0, 2000, 2100, 0, true,
|
|
|
|
|
Temperature::kWarm, threshold_time - 5000);
|
|
|
|
|
file_map_[2].first->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
// Stop if a file is being compacted
|
|
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, FIFOToWarmWithHotBetweenWarms) {
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleFIFO);
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const uint64_t kMaxSize = kFileSize * 100000;
|
|
|
|
|
uint64_t kWarmThreshold = 2000;
|
|
|
|
|
|
|
|
|
|
fifo_options_.max_table_files_size = kMaxSize;
|
|
|
|
|
fifo_options_.age_for_warm = kWarmThreshold;
|
|
|
|
|
mutable_cf_options_.compaction_options_fifo = fifo_options_;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = kFileSize * 100;
|
|
|
|
|
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
int64_t current_time = 0;
|
|
|
|
|
ASSERT_OK(Env::Default()->GetCurrentTime(¤t_time));
|
|
|
|
|
uint64_t threshold_time =
|
|
|
|
|
static_cast<uint64_t>(current_time) - kWarmThreshold;
|
|
|
|
|
Add(0, 6U, "240", "290", 2 * kFileSize, 0, 2900, 3000, 0, true,
|
|
|
|
|
Temperature::kUnknown, static_cast<uint64_t>(current_time) - 100);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 2700, 2800, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time + 100);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 2500, 2600, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 2000);
|
|
|
|
|
Add(0, 3U, "200", "300", 4 * kFileSize, 0, 2300, 2400, 0, true,
|
|
|
|
|
Temperature::kWarm, threshold_time - 3000);
|
|
|
|
|
Add(0, 2U, "200", "300", 4 * kFileSize, 0, 2100, 2200, 0, true,
|
|
|
|
|
Temperature::kUnknown, threshold_time - 4000);
|
|
|
|
|
Add(0, 1U, "200", "300", 4 * kFileSize, 0, 2000, 2100, 0, true,
|
|
|
|
|
Temperature::kWarm, threshold_time - 5000);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), true);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(fifo_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
// Stop if a file is being compacted
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping1) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
mutable_cf_options_.target_file_size_base = 100000000000;
|
|
|
|
|
mutable_cf_options_.target_file_size_multiplier = 10;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
|
|
|
|
|
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
|
|
|
|
|
|
|
|
|
|
Add(2, 6U, "150", "179", 50000000U);
|
|
|
|
|
Add(2, 7U, "180", "220", 50000000U);
|
|
|
|
|
Add(2, 8U, "321", "400", 50000000U); // File not overlapping
|
|
|
|
|
Add(2, 9U, "721", "800", 50000000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "150", "170", 260000000U);
|
|
|
|
|
Add(3, 27U, "171", "179", 260000000U);
|
|
|
|
|
Add(3, 28U, "191", "220", 260000000U);
|
|
|
|
|
Add(3, 29U, "221", "300", 260000000U);
|
|
|
|
|
Add(3, 30U, "750", "900", 260000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
// Pick file 8 because it overlaps with 0 files on level 3.
|
|
|
|
|
ASSERT_EQ(8U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
// Compaction input size * 1.1
|
|
|
|
|
ASSERT_GE(uint64_t{55000000}, compaction->OutputFilePreallocationSize());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping2) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
mutable_cf_options_.target_file_size_base = 10000000;
|
|
|
|
|
mutable_cf_options_.target_file_size_multiplier = 10;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
|
|
|
|
|
|
|
|
|
|
Add(2, 6U, "150", "175",
|
|
|
|
|
60000000U); // Overlaps with file 26, 27, total size 521M
|
|
|
|
|
Add(2, 7U, "176", "200", 60000000U); // Overlaps with file 27, 28, total size
|
|
|
|
|
// 520M, the smallest overlapping
|
|
|
|
|
Add(2, 8U, "201", "300",
|
|
|
|
|
60000000U); // Overlaps with file 28, 29, total size 521M
|
|
|
|
|
|
|
|
|
|
Add(3, 25U, "100", "110", 261000000U);
|
|
|
|
|
Add(3, 26U, "150", "170", 261000000U);
|
|
|
|
|
Add(3, 27U, "171", "179", 260000000U);
|
|
|
|
|
Add(3, 28U, "191", "220", 260000000U);
|
|
|
|
|
Add(3, 29U, "221", "300", 261000000U);
|
|
|
|
|
Add(3, 30U, "321", "400", 261000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
// Picking file 7 because overlapping ratio is the biggest.
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping3) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
|
|
|
|
|
// file 7 and 8 over lap with the same file, but file 8 is smaller so
|
|
|
|
|
// it will be picked.
|
|
|
|
|
Add(2, 6U, "150", "167", 60000000U); // Overlaps with file 26, 27
|
|
|
|
|
Add(2, 7U, "168", "169", 60000000U); // Overlaps with file 27
|
|
|
|
|
Add(2, 8U, "201", "300", 61000000U); // Overlaps with file 28, but the file
|
|
|
|
|
// itself is larger. Should be picked.
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "160", "165", 260000000U);
|
|
|
|
|
Add(3, 27U, "166", "170", 260000000U);
|
|
|
|
|
Add(3, 28U, "180", "400", 260000000U);
|
|
|
|
|
Add(3, 29U, "401", "500", 260000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
// Picking file 8 because overlapping ratio is the biggest.
|
|
|
|
|
ASSERT_EQ(8U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping4) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
Ignore max_compaction_bytes for compaction input that are within output key-range (#10835)
Summary:
When picking compaction input files, we sometimes stop picking a file that is fully included in the output key-range due to hitting max_compaction_bytes. Including these input files can potentially reduce WA at the expense of larger compactions. Larger compaction should be fine as files from input level are usually 10X smaller than files from output level. This PR adds a mutable CF option `ignore_max_compaction_bytes_for_input` that is enabled by default. We can remove this option once we are sure it is safe.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10835
Test Plan:
- CI, a unit test on max_compaction_bytes fails before turning this flag off.
- Benchmark does not show much difference in WA: `./db_bench --benchmarks=fillrandom,waitforcompaction,stats,levelstats -max_background_jobs=12 -num=2000000000 -target_file_size_base=33554432 --write_buffer_size=33554432`
```
main:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 91.59 MB 0.8 70.9 0.0 70.9 200.8 129.9 0.0 1.5 25.2 71.2 2886.55 2463.45 9725 0.297 1093M 254K 0.0 0.0
L1 9/0 248.03 MB 1.0 392.0 129.8 262.2 391.7 129.5 0.0 3.0 69.0 68.9 5821.71 5536.90 804 7.241 6029M 5814K 0.0 0.0
L2 87/0 2.50 GB 1.0 537.0 128.5 408.5 533.8 125.2 0.7 4.2 69.5 69.1 7912.24 7323.70 4417 1.791 8299M 36M 0.0 0.0
L3 836/0 24.99 GB 1.0 616.9 118.3 498.7 594.5 95.8 5.2 5.0 66.9 64.5 9442.38 8490.28 4204 2.246 9749M 306M 0.0 0.0
L4 2355/0 62.95 GB 0.3 67.3 37.1 30.2 54.2 24.0 38.9 1.5 72.2 58.2 954.37 821.18 917 1.041 1076M 173M 0.0 0.0
Sum 3290/0 90.77 GB 0.0 1684.2 413.7 1270.5 1775.0 504.5 44.9 13.7 63.8 67.3 27017.25 24635.52 20067 1.346 26G 522M 0.0 0.0
Cumulative compaction: 1774.96 GB write, 154.29 MB/s write, 1684.19 GB read, 146.40 MB/s read, 27017.3 seconds
This PR:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 45.71 MB 0.8 72.9 0.0 72.9 202.8 129.9 0.0 1.6 25.4 70.7 2938.16 2510.36 9741 0.302 1124M 265K 0.0 0.0
L1 8/0 234.54 MB 0.9 384.5 129.8 254.7 384.2 129.6 0.0 3.0 69.0 68.9 5708.08 5424.43 791 7.216 5913M 5753K 0.0 0.0
L2 84/0 2.47 GB 1.0 543.1 128.6 414.5 539.9 125.4 0.7 4.2 69.6 69.2 7989.31 7403.13 4418 1.808 8393M 36M 0.0 0.0
L3 839/0 24.96 GB 1.0 615.6 118.4 497.2 593.2 96.0 5.1 5.0 66.6 64.1 9471.23 8489.31 4193 2.259 9726M 306M 0.0 0.0
L4 2360/0 63.04 GB 0.3 67.6 37.3 30.3 54.4 24.1 38.9 1.5 71.5 57.6 967.30 827.99 907 1.066 1080M 173M 0.0 0.0
Sum 3294/0 90.75 GB 0.0 1683.8 414.2 1269.6 1774.5 504.9 44.8 13.7 63.7 67.1 27074.08 24655.22 20050 1.350 26G 522M 0.0 0.0
Cumulative compaction: 1774.52 GB write, 157.09 MB/s write, 1683.77 GB read, 149.06 MB/s read, 27074.1 seconds
```
Reviewed By: ajkr
Differential Revision: D40518319
Pulled By: cbi42
fbshipit-source-id: f4ea614bc0ebefe007ffaf05bb9aec9a8ca25b60
2 years ago
|
|
|
mutable_cf_options_.ignore_max_compaction_bytes_for_input = false;
|
|
|
|
|
|
|
|
|
|
// file 7 and 8 over lap with the same file, but file 8 is smaller so
|
|
|
|
|
// it will be picked.
|
|
|
|
|
// Overlaps with file 26, 27. And the file is compensated so will be
|
|
|
|
|
// picked up.
|
|
|
|
|
Add(2, 6U, "150", "167", 60000000U, 0, 100, 100, 180000000U);
|
|
|
|
|
Add(2, 7U, "168", "169", 60000000U); // Overlaps with file 27
|
|
|
|
|
Add(2, 8U, "201", "300", 61000000U); // Overlaps with file 28
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "160", "165", 60000000U);
|
|
|
|
|
// Boosted file size in output level is not considered.
|
|
|
|
|
Add(3, 27U, "166", "170", 60000000U, 0, 100, 100, 260000000U);
|
|
|
|
|
Add(3, 28U, "180", "400", 60000000U);
|
|
|
|
|
Add(3, 29U, "401", "500", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
// Picking file 8 because overlapping ratio is the biggest.
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriRoundRobin) {
|
|
|
|
|
std::vector<InternalKey> test_cursors = {InternalKey("249", 100, kTypeValue),
|
|
|
|
|
InternalKey("600", 100, kTypeValue),
|
|
|
|
|
InternalKey()};
|
|
|
|
|
std::vector<uint32_t> selected_files = {8U, 6U, 6U};
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_pri = kRoundRobin;
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 12000000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
for (size_t i = 0; i < test_cursors.size(); i++) {
|
|
|
|
|
// start a brand new version in each test.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
vstorage_->ResizeCompactCursors(6);
|
|
|
|
|
// Set the cursor
|
|
|
|
|
vstorage_->AddCursorForOneLevel(2, test_cursors[i]);
|
|
|
|
|
Add(2, 6U, "150", "199", 50000000U); // Overlap with 26U, 27U
|
|
|
|
|
Add(2, 7U, "200", "249", 50000000U); // File not overlapping
|
|
|
|
|
Add(2, 8U, "300", "600", 50000000U); // Overlap with 28U, 29U
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "130", "165", 60000000U);
|
|
|
|
|
Add(3, 27U, "166", "170", 60000000U);
|
|
|
|
|
Add(3, 28U, "270", "340", 60000000U);
|
|
|
|
|
Add(3, 29U, "401", "500", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
LevelCompactionPicker local_level_compaction_picker =
|
|
|
|
|
LevelCompactionPicker(ioptions_, &icmp_);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
local_level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
// Since the max bytes for level 2 is 120M, picking one file to compact
|
|
|
|
|
// makes the post-compaction level size less than 120M, there is exactly one
|
|
|
|
|
// file picked for round-robin compaction
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(selected_files[i], compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
// release the version storage
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMultipleFilesRoundRobin1) {
|
|
|
|
|
ioptions_.compaction_pri = kRoundRobin;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000u;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 120;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
// start a brand new version in each test.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
vstorage_->ResizeCompactCursors(6);
|
|
|
|
|
// Set the cursor (file picking should start with 7U)
|
|
|
|
|
vstorage_->AddCursorForOneLevel(2, InternalKey("199", 100, kTypeValue));
|
|
|
|
|
Add(2, 6U, "150", "199", 500U);
|
|
|
|
|
Add(2, 7U, "200", "249", 500U);
|
|
|
|
|
Add(2, 8U, "300", "600", 500U);
|
|
|
|
|
Add(2, 9U, "700", "800", 500U);
|
|
|
|
|
Add(2, 10U, "850", "950", 500U);
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "130", "165", 600U);
|
|
|
|
|
Add(3, 27U, "166", "170", 600U);
|
|
|
|
|
Add(3, 28U, "270", "340", 600U);
|
|
|
|
|
Add(3, 29U, "401", "500", 600U);
|
|
|
|
|
Add(3, 30U, "601", "800", 600U);
|
|
|
|
|
Add(3, 31U, "830", "890", 600U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
LevelCompactionPicker local_level_compaction_picker =
|
|
|
|
|
LevelCompactionPicker(ioptions_, &icmp_);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
local_level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
|
|
|
|
|
// The maximum compaction bytes is very large in this case so we can igore its
|
|
|
|
|
// constraint in this test case. The maximum bytes for level 2 is 1200
|
|
|
|
|
// bytes, and thus at least 3 files should be picked so that the bytes in
|
|
|
|
|
// level 2 is less than the maximum
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(8U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(9U, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
// release the version storage
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMultipleFilesRoundRobin2) {
|
|
|
|
|
ioptions_.compaction_pri = kRoundRobin;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 2500u;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 120;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
// start a brand new version in each test.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
vstorage_->ResizeCompactCursors(6);
|
|
|
|
|
// Set the cursor (file picking should start with 6U)
|
|
|
|
|
vstorage_->AddCursorForOneLevel(2, InternalKey("1000", 100, kTypeValue));
|
|
|
|
|
Add(2, 6U, "150", "199", 500U); // Overlap with 26U, 27U
|
|
|
|
|
Add(2, 7U, "200", "249", 500U); // Overlap with 27U
|
|
|
|
|
Add(2, 8U, "300", "600", 500U); // Overlap with 28U, 29U
|
|
|
|
|
Add(2, 9U, "700", "800", 500U);
|
|
|
|
|
Add(2, 10U, "850", "950", 500U);
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "130", "165", 600U);
|
|
|
|
|
Add(3, 27U, "166", "230", 600U);
|
|
|
|
|
Add(3, 28U, "270", "340", 600U);
|
|
|
|
|
Add(3, 29U, "401", "500", 600U);
|
|
|
|
|
Add(3, 30U, "601", "800", 600U);
|
|
|
|
|
Add(3, 31U, "830", "890", 600U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
LevelCompactionPicker local_level_compaction_picker =
|
|
|
|
|
LevelCompactionPicker(ioptions_, &icmp_);
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
local_level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
|
|
|
|
|
// The maximum compaction bytes is only 2500 bytes now. Even though we are
|
|
|
|
|
// required to choose 3 files so that the post-compaction level size is less
|
|
|
|
|
// than 1200 bytes. We cannot pick 3 files to compact since the maximum
|
|
|
|
|
// compaction size is 2500. After picking files 6U and 7U, the number of
|
|
|
|
|
// compaction bytes has reached 2200, and thus no more space to add another
|
|
|
|
|
// input file with 50M bytes.
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
// release the version storage
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMultipleFilesRoundRobin3) {
|
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|
|
|
ioptions_.compaction_pri = kRoundRobin;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 1000000u;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 120;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
// start a brand new version in each test.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
vstorage_->ResizeCompactCursors(6);
|
|
|
|
|
// Set the cursor (file picking should start with 9U)
|
|
|
|
|
vstorage_->AddCursorForOneLevel(2, InternalKey("700", 100, kTypeValue));
|
|
|
|
|
Add(2, 6U, "150", "199", 500U);
|
|
|
|
|
Add(2, 7U, "200", "249", 500U);
|
|
|
|
|
Add(2, 8U, "300", "600", 500U);
|
|
|
|
|
Add(2, 9U, "700", "800", 500U);
|
|
|
|
|
Add(2, 10U, "850", "950", 500U);
|
|
|
|
|
|
|
|
|
|
Add(3, 26U, "130", "165", 600U);
|
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|
|
|
Add(3, 27U, "166", "170", 600U);
|
|
|
|
|
Add(3, 28U, "270", "340", 600U);
|
|
|
|
|
Add(3, 29U, "401", "500", 600U);
|
|
|
|
|
Add(3, 30U, "601", "800", 600U);
|
|
|
|
|
Add(3, 31U, "830", "890", 600U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
LevelCompactionPicker local_level_compaction_picker =
|
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|
|
|
LevelCompactionPicker(ioptions_, &icmp_);
|
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|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
local_level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Support subcmpct using reserved resources for round-robin priority (#10341)
Summary:
Earlier implementation of round-robin priority can only pick one file at a time and disallows parallel compactions within the same level. In this PR, round-robin compaction policy will expand towards more input files with respecting some additional constraints, which are summarized as follows:
* Constraint 1: We can only pick consecutive files
- Constraint 1a: When a file is being compacted (or some input files are being compacted after expanding), we cannot choose it and have to stop choosing more files
- Constraint 1b: When we reach the last file (with the largest keys), we cannot choose more files (the next file will be the first one with small keys)
* Constraint 2: We should ensure the total compaction bytes (including the overlapped files from the next level) is no more than `mutable_cf_options_.max_compaction_bytes`
* Constraint 3: We try our best to pick as many files as possible so that the post-compaction level size can be just less than `MaxBytesForLevel(start_level_)`
* Constraint 4: If trivial move is allowed, we reuse the logic of `TryNonL0TrivialMove()` instead of expanding files with Constraint 3
More details can be found in `LevelCompactionBuilder::SetupOtherFilesWithRoundRobinExpansion()`.
The above optimization accelerates the process of moving the compaction cursor, in which the write-amp can be further reduced. While a large compaction may lead to high write stall, we break this large compaction into several subcompactions **regardless of** the `max_subcompactions` limit. The number of subcompactions for round-robin compaction priority is determined through the following steps:
* Step 1: Initialized against `max_output_file_limit`, the number of input files in the start level, and also the range size limit `ranges.size()`
* Step 2: Call `AcquireSubcompactionResources()`when max subcompactions is not sufficient, but we may or may not obtain desired resources, additional number of resources is stored in `extra_num_subcompaction_threads_reserved_`). Subcompaction limit is changed and update `num_planned_subcompactions` with `GetSubcompactionLimit()`
* Step 3: Call `ShrinkSubcompactionResources()` to ensure extra resources can be released (extra resources may exist for round-robin compaction when the number of actual number of subcompactions is less than the number of planned subcompactions)
More details can be found in `CompactionJob::AcquireSubcompactionResources()`,`CompactionJob::ShrinkSubcompactionResources()`, and `CompactionJob::ReleaseSubcompactionResources()`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10341
Test Plan: Add `CompactionPriMultipleFilesRoundRobin[1-3]` unit test in `compaction_picker_test.cc` and `RoundRobinSubcompactionsAgainstResources.SubcompactionsUsingResources/[0-4]`, `RoundRobinSubcompactionsAgainstPressureToken.PressureTokenTest/[0-1]` in `db_compaction_test.cc`
Reviewed By: ajkr, hx235
Differential Revision: D37792644
Pulled By: littlepig2013
fbshipit-source-id: 7fecb7c4ffd97b34bbf6e3b760b2c35a772a0657
2 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
|
|
|
|
|
// Cannot pick more files since we reach the last file in level 2
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(9U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(10U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
// release the version storage
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CompactionPriMinOverlappingManyFiles) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 15000000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
|
|
|
|
|
// file 7 and 8 over lap with the same file, but file 8 is smaller so
|
|
|
|
|
// it will be picked.
|
|
|
|
|
Add(2, 13U, "010", "011",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 14U, "020", "021",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 15U, "030", "031",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 16U, "040", "041",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 17U, "050", "051",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 18U, "060", "061",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 19U, "070", "071",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 20U, "080", "081",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
|
|
|
|
|
Add(2, 6U, "150", "167", 60000000U); // Overlaps with file 26, 27
|
|
|
|
|
Add(2, 7U, "168", "169", 60000000U); // Overlaps with file 27
|
|
|
|
|
Add(2, 8U, "201", "300", 61000000U); // Overlaps with file 28, but the file
|
|
|
|
|
// itself is larger. Should be picked.
|
|
|
|
|
Add(2, 9U, "610", "611",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 10U, "620", "621",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 11U, "630", "631",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
Add(2, 12U, "640", "641",
|
|
|
|
|
6100U); // Overlaps with a large file. Not picked
|
|
|
|
|
|
|
|
|
|
Add(3, 31U, "001", "100", 260000000U);
|
|
|
|
|
Add(3, 26U, "160", "165", 260000000U);
|
|
|
|
|
Add(3, 27U, "166", "170", 260000000U);
|
|
|
|
|
Add(3, 28U, "180", "400", 260000000U);
|
|
|
|
|
Add(3, 29U, "401", "500", 260000000U);
|
|
|
|
|
Add(3, 30U, "601", "700", 260000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
// Picking file 8 because overlapping ratio is the biggest.
|
|
|
|
|
ASSERT_EQ(8U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// This test exhibits the bug where we don't properly reset parent_index in
|
|
|
|
|
// PickCompaction()
|
|
|
|
|
TEST_F(CompactionPickerTest, ParentIndexResetBug) {
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 200;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200"); // <- marked for compaction
|
|
|
|
|
Add(1, 3U, "400", "500", 600); // <- this one needs compacting
|
|
|
|
|
Add(2, 4U, "150", "200");
|
|
|
|
|
Add(2, 5U, "201", "210");
|
|
|
|
|
Add(2, 6U, "300", "310");
|
|
|
|
|
Add(2, 7U, "400", "500"); // <- being compacted
|
|
|
|
|
|
|
|
|
|
vstorage_->LevelFiles(2)[3]->being_compacted = true;
|
|
|
|
|
vstorage_->LevelFiles(0)[0]->marked_for_compaction = true;
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// This test checks ExpandWhileOverlapping() by having overlapping user keys
|
|
|
|
|
// ranges (with different sequence numbers) in the input files.
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
ioptions_.compaction_pri = kByCompensatedSize;
|
|
|
|
|
|
|
|
|
|
Add(1, 1U, "100", "150", 1U);
|
|
|
|
|
// Overlapping user keys
|
|
|
|
|
Add(1, 2U, "200", "400", 1U);
|
|
|
|
|
Add(1, 3U, "400", "500", 1000000000U, 0, 0);
|
|
|
|
|
Add(2, 4U, "600", "700", 1U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys2) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// Overlapping user keys on same level and output level
|
|
|
|
|
Add(1, 1U, "200", "400", 1000000000U);
|
|
|
|
|
Add(1, 2U, "400", "500", 1U, 0, 0);
|
|
|
|
|
Add(2, 3U, "000", "100", 1U);
|
|
|
|
|
Add(2, 4U, "100", "600", 1U, 0, 0);
|
|
|
|
|
Add(2, 5U, "600", "700", 1U, 0, 0);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(1, 2)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys3) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// Chain of overlapping user key ranges (forces ExpandWhileOverlapping() to
|
|
|
|
|
// expand multiple times)
|
|
|
|
|
Add(1, 1U, "100", "150", 1U);
|
|
|
|
|
Add(1, 2U, "150", "200", 1U, 0, 0);
|
|
|
|
|
Add(1, 3U, "200", "250", 1000000000U, 0, 0);
|
|
|
|
|
Add(1, 4U, "250", "300", 1U, 0, 0);
|
|
|
|
|
Add(1, 5U, "300", "350", 1U, 0, 0);
|
|
|
|
|
// Output level overlaps with the beginning and the end of the chain
|
|
|
|
|
Add(2, 6U, "050", "100", 1U);
|
|
|
|
|
Add(2, 7U, "350", "400", 1U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(5U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(0, 3)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(0, 4)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys4) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000000;
|
|
|
|
|
|
|
|
|
|
Add(1, 1U, "100", "150", 1U);
|
|
|
|
|
Add(1, 2U, "150", "199", 1U, 0, 0);
|
|
|
|
|
Add(1, 3U, "200", "250", 1100000U, 0, 0);
|
|
|
|
|
Add(1, 4U, "251", "300", 1U, 0, 0);
|
|
|
|
|
Add(1, 5U, "300", "350", 1U, 0, 0);
|
|
|
|
|
|
|
|
|
|
Add(2, 6U, "100", "115", 1U);
|
|
|
|
|
Add(2, 7U, "125", "325", 1U);
|
|
|
|
|
Add(2, 8U, "350", "400", 1U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
Fix a bug that may cause a deleted row to appear again
Summary:
The previous fix of reappearing of a deleted row 0ce258f9b37c8661ea326039372bef8f185615ef missed a corner case, which can be reproduced using test CompactionPickerTest.OverlappingUserKeys7. Consider such an example:
input level file: 1[B E] 2[F H]
output level file: 3[A C] 4[D I] 5[I K]
First file 2 is picked, which overlaps to file 4. 4 expands to 5. Now the all range is [D K] with 2 output level files. When we try to expand that, [D K] overlaps with file 1 and 2 in the input level, and 1 and 2 overlaps with 3 and 4 in the output level. So we end up with picking 3 and 4 in the output level. Without expanding, it also has 2 files, so we determine the output level doesn't change, although they are the different two files.
The fix is to expand the output level files after we picked 3 and 4. In that case, there will be three output level files so we will abort the expanding.
I also added two unit tests related to marked_for_compaction and being_compacted. They have been passing though.
Test Plan: Run the new unit test, as well as all other tests.
Reviewers: andrewkr, IslamAbdelRahman
Reviewed By: IslamAbdelRahman
Subscribers: yoshinorim, leveldb, andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D65373
8 years ago
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys5) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// Overlapping user keys on same level and output level
|
|
|
|
|
Add(1, 1U, "200", "400", 1000000000U);
|
|
|
|
|
Add(1, 2U, "400", "500", 1U, 0, 0);
|
|
|
|
|
Add(2, 3U, "000", "100", 1U);
|
|
|
|
|
Add(2, 4U, "100", "600", 1U, 0, 0);
|
|
|
|
|
Add(2, 5U, "600", "700", 1U, 0, 0);
|
|
|
|
|
|
|
|
|
|
vstorage_->LevelFiles(2)[2]->being_compacted = true;
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Fix a bug that may cause a deleted row to appear again
Summary:
The previous fix of reappearing of a deleted row 0ce258f9b37c8661ea326039372bef8f185615ef missed a corner case, which can be reproduced using test CompactionPickerTest.OverlappingUserKeys7. Consider such an example:
input level file: 1[B E] 2[F H]
output level file: 3[A C] 4[D I] 5[I K]
First file 2 is picked, which overlaps to file 4. 4 expands to 5. Now the all range is [D K] with 2 output level files. When we try to expand that, [D K] overlaps with file 1 and 2 in the input level, and 1 and 2 overlaps with 3 and 4 in the output level. So we end up with picking 3 and 4 in the output level. Without expanding, it also has 2 files, so we determine the output level doesn't change, although they are the different two files.
The fix is to expand the output level files after we picked 3 and 4. In that case, there will be three output level files so we will abort the expanding.
I also added two unit tests related to marked_for_compaction and being_compacted. They have been passing though.
Test Plan: Run the new unit test, as well as all other tests.
Reviewers: andrewkr, IslamAbdelRahman
Reviewed By: IslamAbdelRahman
Subscribers: yoshinorim, leveldb, andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D65373
8 years ago
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys6) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// Overlapping user keys on same level and output level
|
|
|
|
|
Add(1, 1U, "200", "400", 1U, 0, 0);
|
|
|
|
|
Add(1, 2U, "401", "500", 1U, 0, 0);
|
|
|
|
|
Add(2, 3U, "000", "100", 1U);
|
|
|
|
|
Add(2, 4U, "100", "300", 1U, 0, 0);
|
|
|
|
|
Add(2, 5U, "305", "450", 1U, 0, 0);
|
|
|
|
|
Add(2, 6U, "460", "600", 1U, 0, 0);
|
|
|
|
|
Add(2, 7U, "600", "700", 1U, 0, 0);
|
|
|
|
|
|
|
|
|
|
vstorage_->LevelFiles(1)[0]->marked_for_compaction = true;
|
|
|
|
|
vstorage_->LevelFiles(1)[1]->marked_for_compaction = true;
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Fix a bug that may cause a deleted row to appear again
Summary:
The previous fix of reappearing of a deleted row 0ce258f9b37c8661ea326039372bef8f185615ef missed a corner case, which can be reproduced using test CompactionPickerTest.OverlappingUserKeys7. Consider such an example:
input level file: 1[B E] 2[F H]
output level file: 3[A C] 4[D I] 5[I K]
First file 2 is picked, which overlaps to file 4. 4 expands to 5. Now the all range is [D K] with 2 output level files. When we try to expand that, [D K] overlaps with file 1 and 2 in the input level, and 1 and 2 overlaps with 3 and 4 in the output level. So we end up with picking 3 and 4 in the output level. Without expanding, it also has 2 files, so we determine the output level doesn't change, although they are the different two files.
The fix is to expand the output level files after we picked 3 and 4. In that case, there will be three output level files so we will abort the expanding.
I also added two unit tests related to marked_for_compaction and being_compacted. They have been passing though.
Test Plan: Run the new unit test, as well as all other tests.
Reviewers: andrewkr, IslamAbdelRahman
Reviewed By: IslamAbdelRahman
Subscribers: yoshinorim, leveldb, andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D65373
8 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys7) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
// Overlapping user keys on same level and output level
|
|
|
|
|
Add(1, 1U, "200", "400", 1U, 0, 0);
|
|
|
|
|
Add(1, 2U, "401", "500", 1000000000U, 0, 0);
|
|
|
|
|
Add(2, 3U, "100", "250", 1U);
|
|
|
|
|
Add(2, 4U, "300", "600", 1U, 0, 0);
|
|
|
|
|
Add(2, 5U, "600", "800", 1U, 0, 0);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
Fix a bug that may cause a deleted row to appear again
Summary:
The previous fix of reappearing of a deleted row 0ce258f9b37c8661ea326039372bef8f185615ef missed a corner case, which can be reproduced using test CompactionPickerTest.OverlappingUserKeys7. Consider such an example:
input level file: 1[B E] 2[F H]
output level file: 3[A C] 4[D I] 5[I K]
First file 2 is picked, which overlaps to file 4. 4 expands to 5. Now the all range is [D K] with 2 output level files. When we try to expand that, [D K] overlaps with file 1 and 2 in the input level, and 1 and 2 overlaps with 3 and 4 in the output level. So we end up with picking 3 and 4 in the output level. Without expanding, it also has 2 files, so we determine the output level doesn't change, although they are the different two files.
The fix is to expand the output level files after we picked 3 and 4. In that case, there will be three output level files so we will abort the expanding.
I also added two unit tests related to marked_for_compaction and being_compacted. They have been passing though.
Test Plan: Run the new unit test, as well as all other tests.
Reviewers: andrewkr, IslamAbdelRahman
Reviewed By: IslamAbdelRahman
Subscribers: yoshinorim, leveldb, andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D65373
8 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_GE(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_GE(2U, compaction->num_input_files(1));
|
|
|
|
|
// File 5 has to be included in the compaction
|
|
|
|
|
ASSERT_EQ(5U, compaction->inputs(1)->back()->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys8) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
// grow the number of inputs in "level" without
|
|
|
|
|
// changing the number of "level+1" files we pick up
|
|
|
|
|
// Expand input level as much as possible
|
|
|
|
|
// no overlapping case
|
|
|
|
|
Add(1, 1U, "101", "150", 1U);
|
|
|
|
|
Add(1, 2U, "151", "200", 1U);
|
|
|
|
|
Add(1, 3U, "201", "300", 1000000000U);
|
|
|
|
|
Add(1, 4U, "301", "400", 1U);
|
|
|
|
|
Add(1, 5U, "401", "500", 1U);
|
|
|
|
|
Add(2, 6U, "150", "200", 1U);
|
|
|
|
|
Add(2, 7U, "200", "450", 1U, 0, 0);
|
|
|
|
|
Add(2, 8U, "500", "600", 1U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys9) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
// grow the number of inputs in "level" without
|
|
|
|
|
// changing the number of "level+1" files we pick up
|
|
|
|
|
// Expand input level as much as possible
|
|
|
|
|
// overlapping case
|
|
|
|
|
Add(1, 1U, "121", "150", 1U);
|
|
|
|
|
Add(1, 2U, "151", "200", 1U);
|
|
|
|
|
Add(1, 3U, "201", "300", 1000000000U);
|
|
|
|
|
Add(1, 4U, "301", "400", 1U);
|
|
|
|
|
Add(1, 5U, "401", "500", 1U);
|
|
|
|
|
Add(2, 6U, "100", "120", 1U);
|
|
|
|
|
Add(2, 7U, "150", "200", 1U);
|
|
|
|
|
Add(2, 8U, "200", "450", 1U, 0, 0);
|
|
|
|
|
Add(2, 9U, "501", "600", 1U);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(5U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(0, 3)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(8U, compaction->input(1, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys10) {
|
|
|
|
|
// Locked file encountered when pulling in extra input-level files with same
|
|
|
|
|
// user keys. Verify we pick the next-best file from the same input level.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
|
|
|
|
|
// file_number 2U is largest and thus first choice. But it overlaps with
|
|
|
|
|
// file_number 1U which is being compacted. So instead we pick the next-
|
|
|
|
|
// biggest file, 3U, which is eligible for compaction.
|
|
|
|
|
Add(1 /* level */, 1U /* file_number */, "100" /* smallest */,
|
|
|
|
|
"150" /* largest */, 1U /* file_size */);
|
|
|
|
|
file_map_[1U].first->being_compacted = true;
|
|
|
|
|
Add(1 /* level */, 2U /* file_number */, "150" /* smallest */,
|
|
|
|
|
"200" /* largest */, 1000000000U /* file_size */, 0 /* smallest_seq */,
|
|
|
|
|
0 /* largest_seq */);
|
|
|
|
|
Add(1 /* level */, 3U /* file_number */, "201" /* smallest */,
|
|
|
|
|
"250" /* largest */, 900000000U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 4U /* file_number */, "100" /* smallest */,
|
|
|
|
|
"150" /* largest */, 1U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 5U /* file_number */, "151" /* smallest */,
|
|
|
|
|
"200" /* largest */, 1U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 6U /* file_number */, "201" /* smallest */,
|
|
|
|
|
"250" /* largest */, 1U /* file_size */);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, OverlappingUserKeys11) {
|
|
|
|
|
// Locked file encountered when pulling in extra output-level files with same
|
|
|
|
|
// user keys. Expected to skip that compaction and pick the next-best choice.
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
|
|
|
|
|
// score(L1) = 3.7
|
|
|
|
|
// score(L2) = 1.85
|
|
|
|
|
// There is no eligible file in L1 to compact since both candidates pull in
|
|
|
|
|
// file_number 5U, which overlaps with a file pending compaction (6U). The
|
|
|
|
|
// first eligible compaction is from L2->L3.
|
|
|
|
|
Add(1 /* level */, 2U /* file_number */, "151" /* smallest */,
|
|
|
|
|
"200" /* largest */, 1000000000U /* file_size */);
|
|
|
|
|
Add(1 /* level */, 3U /* file_number */, "201" /* smallest */,
|
|
|
|
|
"250" /* largest */, 1U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 4U /* file_number */, "100" /* smallest */,
|
|
|
|
|
"149" /* largest */, 5000000000U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 5U /* file_number */, "150" /* smallest */,
|
|
|
|
|
"201" /* largest */, 1U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 6U /* file_number */, "201" /* smallest */,
|
|
|
|
|
"249" /* largest */, 1U /* file_size */, 0 /* smallest_seq */,
|
|
|
|
|
0 /* largest_seq */);
|
|
|
|
|
file_map_[6U].first->being_compacted = true;
|
|
|
|
|
Add(3 /* level */, 7U /* file_number */, "100" /* smallest */,
|
|
|
|
|
"149" /* largest */, 1U /* file_size */);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
Try to start TTL earlier with kMinOverlappingRatio is used (#8749)
Summary:
Right now, when options.ttl is set, compactions are triggered around the time when TTL is reached. This might cause extra compactions which are often bursty. This commit tries to mitigate it by picking those files earlier in normal compaction picking process. This is only implemented using kMinOverlappingRatio with Leveled compaction as it is the default value and it is more complicated to change other styles.
When a file is aged more than ttl/2, RocksDB starts to boost the compaction priority of files in normal compaction picking process, and hope by the time TTL is reached, very few extra compaction is needed.
In order for this to work, another change is made: during a compaction, if an output level file is older than ttl/2, cut output files based on original boundary (if it is not in the last level). This is to make sure that after an old file is moved to the next level, and new data is merged from the upper level, the new data falling into this range isn't reset with old timestamp. Without this change, in many cases, most files from one level will keep having old timestamp, even if they have newer data and we stuck in it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8749
Test Plan: Add a unit test to test the boosting logic. Will add a unit test to test it end-to-end.
Reviewed By: jay-zhuang
Differential Revision: D30735261
fbshipit-source-id: 503c2d89250b22911eb99e72b379be154de3428e
3 years ago
|
|
|
TEST_F(CompactionPickerTest, FileTtlBooster) {
|
|
|
|
|
// Set TTL to 2048
|
|
|
|
|
// TTL boosting for all levels starts at 1024,
|
|
|
|
|
// Whole TTL range is 2048 * 31 / 32 - 1024 = 1984 - 1024 = 960.
|
|
|
|
|
// From second last level (L5), range starts at
|
|
|
|
|
// 1024 + 480, 1024 + 240, 1024 + 120 (which is L3).
|
|
|
|
|
// Boosting step 124 / 16 = 7.75 -> 7
|
|
|
|
|
//
|
|
|
|
|
const uint64_t kCurrentTime = 1000000;
|
|
|
|
|
FileMetaData meta;
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
FileTtlBooster booster(kCurrentTime, 2048, 7, 3);
|
|
|
|
|
|
|
|
|
|
// Not triggering if the file is younger than ttl/2
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - 1023;
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - 1024;
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime + 10;
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
|
|
|
|
|
// Within one boosting step
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 120 + 6);
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
|
|
|
|
|
// One boosting step
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 120 + 7);
|
|
|
|
|
ASSERT_EQ(2, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 120 + 8);
|
|
|
|
|
ASSERT_EQ(2, booster.GetBoostScore(&meta));
|
|
|
|
|
|
|
|
|
|
// Multiple boosting steps
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 120 + 30);
|
|
|
|
|
ASSERT_EQ(5, booster.GetBoostScore(&meta));
|
|
|
|
|
|
|
|
|
|
// Very high boosting steps
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 120 + 700);
|
|
|
|
|
ASSERT_EQ(101, booster.GetBoostScore(&meta));
|
|
|
|
|
}
|
|
|
|
|
{
|
|
|
|
|
// Test second last level
|
|
|
|
|
FileTtlBooster booster(kCurrentTime, 2048, 7, 5);
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 480);
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 480 + 60);
|
|
|
|
|
ASSERT_EQ(3, booster.GetBoostScore(&meta));
|
|
|
|
|
}
|
|
|
|
|
{
|
|
|
|
|
// Test last level
|
|
|
|
|
FileTtlBooster booster(kCurrentTime, 2048, 7, 6);
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 480);
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - (1024 + 480 + 60);
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
meta.oldest_ancester_time = kCurrentTime - 3000;
|
|
|
|
|
ASSERT_EQ(1, booster.GetBoostScore(&meta));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri1) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
|
|
|
|
|
|
|
|
|
|
// 6 L0 files, score 3.
|
|
|
|
|
Add(0, 1U, "000", "400", 1U);
|
|
|
|
|
Add(0, 2U, "001", "400", 1U, 0, 0);
|
|
|
|
|
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// L1 total size 2GB, score 2.2. If one file being compacted, score 1.1.
|
|
|
|
|
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
|
|
|
|
|
file_map_[4u].first->being_compacted = true;
|
|
|
|
|
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// Output level overlaps with the beginning and the end of the chain
|
|
|
|
|
Add(2, 6U, "050", "100", 1U);
|
|
|
|
|
Add(2, 7U, "300", "400", 1U);
|
|
|
|
|
|
|
|
|
|
// No compaction should be scheduled, if L0 has higher priority than L1
|
|
|
|
|
// but L0->L1 compaction is blocked by a file in L1 being compacted.
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(0));
|
|
|
|
|
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(1));
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri2) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
|
|
|
|
|
|
|
|
|
|
// 6 L0 files, score 3.
|
|
|
|
|
Add(0, 1U, "000", "400", 1U);
|
|
|
|
|
Add(0, 2U, "001", "400", 1U, 0, 0);
|
|
|
|
|
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// L1 total size 2GB, score 2.2. If one file being compacted, score 1.1.
|
|
|
|
|
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
|
|
|
|
|
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// Output level overlaps with the beginning and the end of the chain
|
|
|
|
|
Add(2, 6U, "050", "100", 1U);
|
|
|
|
|
Add(2, 7U, "300", "400", 1U);
|
|
|
|
|
|
|
|
|
|
// If no file in L1 being compacted, L0->L1 compaction will be scheduled.
|
|
|
|
|
UpdateVersionStorageInfo(); // being_compacted flag is cleared here.
|
|
|
|
|
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(0));
|
|
|
|
|
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(1));
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri3) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
|
|
|
|
|
|
|
|
|
|
// 6 L0 files, score 3.
|
|
|
|
|
Add(0, 1U, "000", "400", 1U);
|
|
|
|
|
Add(0, 2U, "001", "400", 1U, 0, 0);
|
|
|
|
|
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// L1 score more than 6.
|
|
|
|
|
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
|
|
|
|
|
file_map_[4u].first->being_compacted = true;
|
|
|
|
|
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
|
|
|
|
|
Add(1, 51U, "351", "400", 6000000000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
// Output level overlaps with the beginning and the end of the chain
|
|
|
|
|
Add(2, 6U, "050", "100", 1U);
|
|
|
|
|
Add(2, 7U, "300", "400", 1U);
|
|
|
|
|
|
|
|
|
|
// If score in L1 is larger than L0, L1 compaction goes through despite
|
|
|
|
|
// there is pending L0 compaction.
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(0));
|
|
|
|
|
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(1));
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded1) {
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 4;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200", 200);
|
|
|
|
|
Add(0, 2U, "150", "200", 200);
|
|
|
|
|
Add(0, 3U, "150", "200", 200);
|
|
|
|
|
// Level 1 is over target by 200
|
|
|
|
|
Add(1, 4U, "400", "500", 600);
|
|
|
|
|
Add(1, 5U, "600", "700", 600);
|
|
|
|
|
// Level 2 is less than target 10000 even added size of level 1
|
|
|
|
|
// Size ratio of L2/L1 is 9600 / 1200 = 8
|
|
|
|
|
Add(2, 6U, "150", "200", 2500);
|
|
|
|
|
Add(2, 7U, "201", "210", 2000);
|
|
|
|
|
Add(2, 8U, "300", "310", 2600);
|
|
|
|
|
Add(2, 9U, "400", "500", 2500);
|
|
|
|
|
// Level 3 exceeds target 100,000 of 1000
|
|
|
|
|
Add(3, 10U, "400", "500", 101000);
|
|
|
|
|
// Level 4 exceeds target 1,000,000 by 900 after adding size from level 3
|
|
|
|
|
// Size ratio L4/L3 is 9.9
|
|
|
|
|
// After merge from L3, L4 size is 1000900
|
|
|
|
|
Add(4, 11U, "400", "500", 999900);
|
|
|
|
|
Add(5, 12U, "400", "500", 8007200);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(200u * 9u + 10900u + 900u * 9,
|
|
|
|
|
vstorage_->estimated_compaction_needed_bytes());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded2) {
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200", 200);
|
|
|
|
|
Add(0, 2U, "150", "200", 200);
|
|
|
|
|
Add(0, 4U, "150", "200", 200);
|
|
|
|
|
Add(0, 5U, "150", "200", 200);
|
|
|
|
|
Add(0, 6U, "150", "200", 200);
|
|
|
|
|
// Level 1 size will be 1400 after merging with L0
|
|
|
|
|
Add(1, 7U, "400", "500", 200);
|
|
|
|
|
Add(1, 8U, "600", "700", 200);
|
|
|
|
|
// Level 2 is less than target 10000 even added size of level 1
|
|
|
|
|
Add(2, 9U, "150", "200", 9100);
|
|
|
|
|
// Level 3 over the target, but since level 4 is empty, we assume it will be
|
|
|
|
|
// a trivial move.
|
|
|
|
|
Add(3, 10U, "400", "500", 101000);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// estimated L1->L2 merge: 400 * (9100.0 / 1400.0 + 1.0)
|
|
|
|
|
ASSERT_EQ(1400u + 3000u, vstorage_->estimated_compaction_needed_bytes());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded3) {
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "150", "200", 2000);
|
|
|
|
|
Add(0, 2U, "150", "200", 2000);
|
|
|
|
|
Add(0, 4U, "150", "200", 2000);
|
|
|
|
|
Add(0, 5U, "150", "200", 2000);
|
|
|
|
|
Add(0, 6U, "150", "200", 1000);
|
|
|
|
|
// Level 1 size will be 10000 after merging with L0
|
|
|
|
|
Add(1, 7U, "400", "500", 500);
|
|
|
|
|
Add(1, 8U, "600", "700", 500);
|
|
|
|
|
|
|
|
|
|
Add(2, 9U, "150", "200", 10000);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(10000u + 18000u, vstorage_->estimated_compaction_needed_bytes());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeededDynamicLevel) {
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = true;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// Set Last level size 50000
|
|
|
|
|
// num_levels - 1 target 5000
|
|
|
|
|
// num_levels - 2 is base level with target 1000 (rounded up to
|
|
|
|
|
// max_bytes_for_level_base).
|
|
|
|
|
Add(num_levels - 1, 10U, "400", "500", 50000);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", 200);
|
|
|
|
|
Add(0, 2U, "150", "200", 200);
|
|
|
|
|
Add(0, 4U, "150", "200", 200);
|
|
|
|
|
Add(0, 5U, "150", "200", 200);
|
|
|
|
|
Add(0, 6U, "150", "200", 200);
|
|
|
|
|
// num_levels - 3 is over target by 100 + 1000
|
|
|
|
|
Add(num_levels - 3, 7U, "400", "500", 550);
|
|
|
|
|
Add(num_levels - 3, 8U, "600", "700", 550);
|
|
|
|
|
// num_levels - 2 is over target by 1100 + 200
|
|
|
|
|
Add(num_levels - 2, 9U, "150", "200", 5200);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// Merging to the second last level: (5200 / 2100 + 1) * 1100
|
|
|
|
|
// Merging to the last level: (50000 / 6300 + 1) * 1300
|
|
|
|
|
ASSERT_EQ(2100u + 3823u + 11617u,
|
|
|
|
|
vstorage_->estimated_compaction_needed_bytes());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IsBottommostLevelTest) {
|
|
|
|
|
// case 1: Higher levels are empty
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "a", "m");
|
|
|
|
|
Add(0, 2U, "c", "z");
|
|
|
|
|
Add(1, 3U, "d", "e");
|
|
|
|
|
Add(1, 4U, "l", "p");
|
|
|
|
|
Add(2, 5U, "g", "i");
|
|
|
|
|
Add(2, 6U, "x", "z");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 1);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
bool result =
|
|
|
|
|
Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_TRUE(result);
|
|
|
|
|
|
|
|
|
|
// case 2: Higher levels have no overlap
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "a", "m");
|
|
|
|
|
Add(0, 2U, "c", "z");
|
|
|
|
|
Add(1, 3U, "d", "e");
|
|
|
|
|
Add(1, 4U, "l", "p");
|
|
|
|
|
Add(2, 5U, "g", "i");
|
|
|
|
|
Add(2, 6U, "x", "z");
|
|
|
|
|
Add(3, 7U, "k", "p");
|
|
|
|
|
Add(3, 8U, "t", "w");
|
|
|
|
|
Add(4, 9U, "a", "b");
|
|
|
|
|
Add(5, 10U, "c", "cc");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 1);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_TRUE(result);
|
|
|
|
|
|
|
|
|
|
// case 3.1: Higher levels (level 3) have overlap
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "a", "m");
|
|
|
|
|
Add(0, 2U, "c", "z");
|
|
|
|
|
Add(1, 3U, "d", "e");
|
|
|
|
|
Add(1, 4U, "l", "p");
|
|
|
|
|
Add(2, 5U, "g", "i");
|
|
|
|
|
Add(2, 6U, "x", "z");
|
|
|
|
|
Add(3, 7U, "e", "g");
|
|
|
|
|
Add(3, 8U, "h", "k");
|
|
|
|
|
Add(4, 9U, "a", "b");
|
|
|
|
|
Add(5, 10U, "c", "cc");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 1);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_FALSE(result);
|
|
|
|
|
|
|
|
|
|
// case 3.2: Higher levels (level 5) have overlap
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "a", "m");
|
|
|
|
|
Add(0, 2U, "c", "z");
|
|
|
|
|
Add(1, 3U, "d", "e");
|
|
|
|
|
Add(1, 4U, "l", "p");
|
|
|
|
|
Add(2, 5U, "g", "i");
|
|
|
|
|
Add(2, 6U, "x", "z");
|
|
|
|
|
Add(3, 7U, "j", "k");
|
|
|
|
|
Add(3, 8U, "l", "m");
|
|
|
|
|
Add(4, 9U, "a", "b");
|
|
|
|
|
Add(5, 10U, "c", "cc");
|
|
|
|
|
Add(5, 11U, "h", "k");
|
|
|
|
|
Add(5, 12U, "y", "yy");
|
|
|
|
|
Add(5, 13U, "z", "zz");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 1);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_FALSE(result);
|
|
|
|
|
|
|
|
|
|
// case 3.3: Higher levels (level 5) have overlap, but it's only overlapping
|
|
|
|
|
// one key ("d")
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "a", "m");
|
|
|
|
|
Add(0, 2U, "c", "z");
|
|
|
|
|
Add(1, 3U, "d", "e");
|
|
|
|
|
Add(1, 4U, "l", "p");
|
|
|
|
|
Add(2, 5U, "g", "i");
|
|
|
|
|
Add(2, 6U, "x", "z");
|
|
|
|
|
Add(3, 7U, "j", "k");
|
|
|
|
|
Add(3, 8U, "l", "m");
|
|
|
|
|
Add(4, 9U, "a", "b");
|
|
|
|
|
Add(5, 10U, "c", "cc");
|
|
|
|
|
Add(5, 11U, "ccc", "d");
|
|
|
|
|
Add(5, 12U, "y", "yy");
|
|
|
|
|
Add(5, 13U, "z", "zz");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 1);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_FALSE(result);
|
|
|
|
|
|
|
|
|
|
// Level 0 files overlap
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "s", "t");
|
|
|
|
|
Add(0, 2U, "a", "m");
|
|
|
|
|
Add(0, 3U, "b", "z");
|
|
|
|
|
Add(0, 4U, "e", "f");
|
|
|
|
|
Add(5, 10U, "y", "z");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(1, 0);
|
|
|
|
|
AddToCompactionFiles(1U);
|
|
|
|
|
AddToCompactionFiles(2U);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(4U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_FALSE(result);
|
|
|
|
|
|
|
|
|
|
// Level 0 files don't overlap
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "s", "t");
|
|
|
|
|
Add(0, 2U, "a", "m");
|
|
|
|
|
Add(0, 3U, "b", "k");
|
|
|
|
|
Add(0, 4U, "e", "f");
|
|
|
|
|
Add(5, 10U, "y", "z");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(1, 0);
|
|
|
|
|
AddToCompactionFiles(1U);
|
|
|
|
|
AddToCompactionFiles(2U);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(4U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_TRUE(result);
|
|
|
|
|
|
|
|
|
|
// Level 1 files overlap
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
Add(0, 1U, "s", "t");
|
|
|
|
|
Add(0, 2U, "a", "m");
|
|
|
|
|
Add(0, 3U, "b", "k");
|
|
|
|
|
Add(0, 4U, "e", "f");
|
|
|
|
|
Add(1, 5U, "a", "m");
|
|
|
|
|
Add(1, 6U, "n", "o");
|
|
|
|
|
Add(1, 7U, "w", "y");
|
|
|
|
|
Add(5, 10U, "y", "z");
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
SetCompactionInputFilesLevels(2, 0);
|
|
|
|
|
AddToCompactionFiles(1U);
|
|
|
|
|
AddToCompactionFiles(2U);
|
|
|
|
|
AddToCompactionFiles(3U);
|
|
|
|
|
AddToCompactionFiles(4U);
|
|
|
|
|
AddToCompactionFiles(5U);
|
|
|
|
|
AddToCompactionFiles(6U);
|
|
|
|
|
AddToCompactionFiles(7U);
|
|
|
|
|
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
|
|
|
|
|
ASSERT_FALSE(result);
|
|
|
|
|
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, MaxCompactionBytesHit) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 800000u;
|
Ignore max_compaction_bytes for compaction input that are within output key-range (#10835)
Summary:
When picking compaction input files, we sometimes stop picking a file that is fully included in the output key-range due to hitting max_compaction_bytes. Including these input files can potentially reduce WA at the expense of larger compactions. Larger compaction should be fine as files from input level are usually 10X smaller than files from output level. This PR adds a mutable CF option `ignore_max_compaction_bytes_for_input` that is enabled by default. We can remove this option once we are sure it is safe.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10835
Test Plan:
- CI, a unit test on max_compaction_bytes fails before turning this flag off.
- Benchmark does not show much difference in WA: `./db_bench --benchmarks=fillrandom,waitforcompaction,stats,levelstats -max_background_jobs=12 -num=2000000000 -target_file_size_base=33554432 --write_buffer_size=33554432`
```
main:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 91.59 MB 0.8 70.9 0.0 70.9 200.8 129.9 0.0 1.5 25.2 71.2 2886.55 2463.45 9725 0.297 1093M 254K 0.0 0.0
L1 9/0 248.03 MB 1.0 392.0 129.8 262.2 391.7 129.5 0.0 3.0 69.0 68.9 5821.71 5536.90 804 7.241 6029M 5814K 0.0 0.0
L2 87/0 2.50 GB 1.0 537.0 128.5 408.5 533.8 125.2 0.7 4.2 69.5 69.1 7912.24 7323.70 4417 1.791 8299M 36M 0.0 0.0
L3 836/0 24.99 GB 1.0 616.9 118.3 498.7 594.5 95.8 5.2 5.0 66.9 64.5 9442.38 8490.28 4204 2.246 9749M 306M 0.0 0.0
L4 2355/0 62.95 GB 0.3 67.3 37.1 30.2 54.2 24.0 38.9 1.5 72.2 58.2 954.37 821.18 917 1.041 1076M 173M 0.0 0.0
Sum 3290/0 90.77 GB 0.0 1684.2 413.7 1270.5 1775.0 504.5 44.9 13.7 63.8 67.3 27017.25 24635.52 20067 1.346 26G 522M 0.0 0.0
Cumulative compaction: 1774.96 GB write, 154.29 MB/s write, 1684.19 GB read, 146.40 MB/s read, 27017.3 seconds
This PR:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 45.71 MB 0.8 72.9 0.0 72.9 202.8 129.9 0.0 1.6 25.4 70.7 2938.16 2510.36 9741 0.302 1124M 265K 0.0 0.0
L1 8/0 234.54 MB 0.9 384.5 129.8 254.7 384.2 129.6 0.0 3.0 69.0 68.9 5708.08 5424.43 791 7.216 5913M 5753K 0.0 0.0
L2 84/0 2.47 GB 1.0 543.1 128.6 414.5 539.9 125.4 0.7 4.2 69.6 69.2 7989.31 7403.13 4418 1.808 8393M 36M 0.0 0.0
L3 839/0 24.96 GB 1.0 615.6 118.4 497.2 593.2 96.0 5.1 5.0 66.6 64.1 9471.23 8489.31 4193 2.259 9726M 306M 0.0 0.0
L4 2360/0 63.04 GB 0.3 67.6 37.3 30.3 54.4 24.1 38.9 1.5 71.5 57.6 967.30 827.99 907 1.066 1080M 173M 0.0 0.0
Sum 3294/0 90.75 GB 0.0 1683.8 414.2 1269.6 1774.5 504.9 44.8 13.7 63.7 67.1 27074.08 24655.22 20050 1.350 26G 522M 0.0 0.0
Cumulative compaction: 1774.52 GB write, 157.09 MB/s write, 1683.77 GB read, 149.06 MB/s read, 27074.1 seconds
```
Reviewed By: ajkr
Differential Revision: D40518319
Pulled By: cbi42
fbshipit-source-id: f4ea614bc0ebefe007ffaf05bb9aec9a8ca25b60
2 years ago
|
|
|
mutable_cf_options_.ignore_max_compaction_bytes_for_input = false;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// A compaction should be triggered and pick file 2 and 5.
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
// It can expand because adding file 1 and 3, the compaction size will
|
|
|
|
|
// exceed mutable_cf_options_.max_bytes_for_level_base.
|
|
|
|
|
Add(1, 1U, "100", "150", 300000U);
|
|
|
|
|
Add(1, 2U, "151", "200", 300001U, 0, 0);
|
|
|
|
|
Add(1, 3U, "201", "250", 300000U, 0, 0);
|
|
|
|
|
Add(1, 4U, "251", "300", 300000U, 0, 0);
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
Add(2, 5U, "100", "256", 1U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, MaxCompactionBytesNotHit) {
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 800000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 1000000u;
|
Ignore max_compaction_bytes for compaction input that are within output key-range (#10835)
Summary:
When picking compaction input files, we sometimes stop picking a file that is fully included in the output key-range due to hitting max_compaction_bytes. Including these input files can potentially reduce WA at the expense of larger compactions. Larger compaction should be fine as files from input level are usually 10X smaller than files from output level. This PR adds a mutable CF option `ignore_max_compaction_bytes_for_input` that is enabled by default. We can remove this option once we are sure it is safe.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10835
Test Plan:
- CI, a unit test on max_compaction_bytes fails before turning this flag off.
- Benchmark does not show much difference in WA: `./db_bench --benchmarks=fillrandom,waitforcompaction,stats,levelstats -max_background_jobs=12 -num=2000000000 -target_file_size_base=33554432 --write_buffer_size=33554432`
```
main:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 91.59 MB 0.8 70.9 0.0 70.9 200.8 129.9 0.0 1.5 25.2 71.2 2886.55 2463.45 9725 0.297 1093M 254K 0.0 0.0
L1 9/0 248.03 MB 1.0 392.0 129.8 262.2 391.7 129.5 0.0 3.0 69.0 68.9 5821.71 5536.90 804 7.241 6029M 5814K 0.0 0.0
L2 87/0 2.50 GB 1.0 537.0 128.5 408.5 533.8 125.2 0.7 4.2 69.5 69.1 7912.24 7323.70 4417 1.791 8299M 36M 0.0 0.0
L3 836/0 24.99 GB 1.0 616.9 118.3 498.7 594.5 95.8 5.2 5.0 66.9 64.5 9442.38 8490.28 4204 2.246 9749M 306M 0.0 0.0
L4 2355/0 62.95 GB 0.3 67.3 37.1 30.2 54.2 24.0 38.9 1.5 72.2 58.2 954.37 821.18 917 1.041 1076M 173M 0.0 0.0
Sum 3290/0 90.77 GB 0.0 1684.2 413.7 1270.5 1775.0 504.5 44.9 13.7 63.8 67.3 27017.25 24635.52 20067 1.346 26G 522M 0.0 0.0
Cumulative compaction: 1774.96 GB write, 154.29 MB/s write, 1684.19 GB read, 146.40 MB/s read, 27017.3 seconds
This PR:
** Compaction Stats [default] **
Level Files Size Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
L0 3/0 45.71 MB 0.8 72.9 0.0 72.9 202.8 129.9 0.0 1.6 25.4 70.7 2938.16 2510.36 9741 0.302 1124M 265K 0.0 0.0
L1 8/0 234.54 MB 0.9 384.5 129.8 254.7 384.2 129.6 0.0 3.0 69.0 68.9 5708.08 5424.43 791 7.216 5913M 5753K 0.0 0.0
L2 84/0 2.47 GB 1.0 543.1 128.6 414.5 539.9 125.4 0.7 4.2 69.6 69.2 7989.31 7403.13 4418 1.808 8393M 36M 0.0 0.0
L3 839/0 24.96 GB 1.0 615.6 118.4 497.2 593.2 96.0 5.1 5.0 66.6 64.1 9471.23 8489.31 4193 2.259 9726M 306M 0.0 0.0
L4 2360/0 63.04 GB 0.3 67.6 37.3 30.3 54.4 24.1 38.9 1.5 71.5 57.6 967.30 827.99 907 1.066 1080M 173M 0.0 0.0
Sum 3294/0 90.75 GB 0.0 1683.8 414.2 1269.6 1774.5 504.9 44.8 13.7 63.7 67.1 27074.08 24655.22 20050 1.350 26G 522M 0.0 0.0
Cumulative compaction: 1774.52 GB write, 157.09 MB/s write, 1683.77 GB read, 149.06 MB/s read, 27074.1 seconds
```
Reviewed By: ajkr
Differential Revision: D40518319
Pulled By: cbi42
fbshipit-source-id: f4ea614bc0ebefe007ffaf05bb9aec9a8ca25b60
2 years ago
|
|
|
mutable_cf_options_.ignore_max_compaction_bytes_for_input = false;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// A compaction should be triggered and pick file 2 and 5.
|
|
|
|
|
// and it expands to file 1 and 3 too.
|
|
|
|
|
Add(1, 1U, "100", "150", 300000U);
|
|
|
|
|
Add(1, 2U, "151", "200", 300001U, 0, 0);
|
|
|
|
|
Add(1, 3U, "201", "250", 300000U, 0, 0);
|
|
|
|
|
Add(1, 4U, "251", "300", 300000U, 0, 0);
|
level compaction expansion
Summary:
reimplement the compaction expansion on lower level.
Considering such a case:
input level file: 1[B E] 2[F G] 3[H I] 4 [J M]
output level file: 5[A C] 6[D K] 7[L O]
If we initially pick file 2, now we will compact file 2 and 6. But we can safely compact 2, 3 and 6 without expanding the output level.
The previous code is messy and wrong.
In this diff, I first determine the input range [a, b], and output range [c, d],
then we get the range [e,f] = [min(a, c), max(b, d] and put all eligible clean-cut files within [e, f] into this compaction.
**Note: clean-cut means the files don't have the same user key on the boundaries of some files that are not chosen in this compaction**.
Closes https://github.com/facebook/rocksdb/pull/1760
Differential Revision: D4395564
Pulled By: lightmark
fbshipit-source-id: 2dc2c5c
8 years ago
|
|
|
Add(2, 5U, "000", "251", 1U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IsTrivialMoveOn) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// A compaction should be triggered and pick file 2
|
|
|
|
|
Add(1, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(1, 2U, "151", "200", 3001U);
|
|
|
|
|
Add(1, 3U, "201", "250", 3000U);
|
|
|
|
|
Add(1, 4U, "251", "300", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 5U, "120", "130", 7000U);
|
|
|
|
|
Add(3, 6U, "170", "180", 7000U);
|
|
|
|
|
Add(3, 7U, "220", "230", 7000U);
|
|
|
|
|
Add(3, 8U, "270", "280", 7000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, L0TrivialMove1) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000u;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 4;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000000u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "100", "150", 3000U, 0, 710, 800);
|
|
|
|
|
Add(0, 2U, "151", "200", 3001U, 0, 610, 700);
|
|
|
|
|
Add(0, 3U, "301", "350", 3000U, 0, 510, 600);
|
|
|
|
|
Add(0, 4U, "451", "400", 3000U, 0, 410, 500);
|
|
|
|
|
|
|
|
|
|
Add(1, 5U, "120", "130", 7000U);
|
|
|
|
|
Add(1, 6U, "170", "180", 7000U);
|
|
|
|
|
Add(1, 7U, "220", "230", 7000U);
|
|
|
|
|
Add(1, 8U, "270", "280", 7000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, L0TrivialMoveOneFile) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000u;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 4;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000000u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "100", "150", 3000U, 0, 710, 800);
|
|
|
|
|
Add(0, 2U, "551", "600", 3001U, 0, 610, 700);
|
|
|
|
|
Add(0, 3U, "101", "150", 3000U, 0, 510, 600);
|
|
|
|
|
Add(0, 4U, "451", "400", 3000U, 0, 410, 500);
|
|
|
|
|
|
|
|
|
|
Add(1, 5U, "120", "130", 7000U);
|
|
|
|
|
Add(1, 6U, "170", "180", 7000U);
|
|
|
|
|
Add(1, 7U, "220", "230", 7000U);
|
|
|
|
|
Add(1, 8U, "270", "280", 7000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(4, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, L0TrivialMoveWholeL0) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000u;
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 4;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000000u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "300", "350", 3000U, 0, 710, 800);
|
|
|
|
|
Add(0, 2U, "651", "600", 3001U, 0, 610, 700);
|
|
|
|
|
Add(0, 3U, "501", "550", 3000U, 0, 510, 600);
|
|
|
|
|
Add(0, 4U, "451", "400", 3000U, 0, 410, 500);
|
|
|
|
|
|
|
|
|
|
Add(1, 5U, "120", "130", 7000U);
|
|
|
|
|
Add(1, 6U, "970", "980", 7000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(4, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2, compaction->input(0, 3)->fd.GetNumber());
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IsTrivialMoveOffSstPartitioned) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.sst_partitioner_factory = NewSstPartitionerFixedPrefixFactory(1);
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// A compaction should be triggered and pick file 2
|
|
|
|
|
Add(1, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(1, 2U, "151", "200", 3001U);
|
|
|
|
|
Add(1, 3U, "201", "250", 3000U);
|
|
|
|
|
Add(1, 4U, "251", "300", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 5U, "120", "130", 7000U);
|
|
|
|
|
Add(3, 6U, "170", "180", 7000U);
|
|
|
|
|
Add(3, 7U, "220", "230", 7000U);
|
|
|
|
|
Add(3, 8U, "270", "280", 7000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
// No trivial move, because partitioning is applied
|
|
|
|
|
ASSERT_TRUE(!compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IsTrivialMoveOff) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
// A compaction should be triggered and pick all files from level 1
|
|
|
|
|
Add(1, 1U, "100", "150", 300000U, 0, 0);
|
|
|
|
|
Add(1, 2U, "150", "200", 300000U, 0, 0);
|
|
|
|
|
Add(1, 3U, "200", "250", 300000U, 0, 0);
|
|
|
|
|
Add(1, 4U, "250", "300", 300000U, 0, 0);
|
|
|
|
|
|
|
|
|
|
Add(3, 5U, "120", "130", 6000U);
|
|
|
|
|
Add(3, 6U, "140", "150", 6000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_FALSE(compaction->IsTrivialMove());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles1) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(2, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(2, 2U, "151", "200", 3001U);
|
|
|
|
|
Add(2, 3U, "301", "350", 3000U);
|
|
|
|
|
Add(2, 4U, "451", "400", 3000U);
|
|
|
|
|
Add(2, 5U, "551", "500", 3000U);
|
|
|
|
|
Add(2, 6U, "651", "600", 3000U);
|
|
|
|
|
Add(2, 7U, "751", "700", 3000U);
|
|
|
|
|
Add(2, 8U, "851", "900", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 16U, "170", "180", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(4, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(5, compaction->input(0, 2)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(6, compaction->input(0, 3)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles2) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(2, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(2, 2U, "151", "160", 3001U);
|
|
|
|
|
Add(2, 3U, "161", "179", 3000U);
|
|
|
|
|
Add(2, 4U, "220", "400", 3000U);
|
|
|
|
|
Add(2, 5U, "551", "500", 3000U);
|
|
|
|
|
Add(2, 6U, "651", "600", 3000U);
|
|
|
|
|
Add(2, 7U, "751", "700", 3000U);
|
|
|
|
|
Add(2, 8U, "851", "900", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles3) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// Even if consecutive files can be trivial moved, we don't pick them
|
|
|
|
|
// since in case trivial move can't be issued for a reason, we cannot
|
|
|
|
|
// fall back to normal compactions.
|
|
|
|
|
Add(2, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(2, 2U, "151", "160", 3001U);
|
|
|
|
|
Add(2, 5U, "551", "500", 3000U);
|
|
|
|
|
Add(2, 6U, "651", "600", 3000U);
|
|
|
|
|
Add(2, 7U, "751", "700", 3000U);
|
|
|
|
|
Add(2, 8U, "851", "900", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles4) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(2, 1U, "100", "150", 4000U);
|
|
|
|
|
Add(2, 2U, "151", "160", 4001U);
|
|
|
|
|
Add(2, 3U, "161", "179", 4000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles5) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// File 4 and 5 aren't clean cut, so only 2 and 3 are picked.
|
|
|
|
|
Add(2, 1U, "100", "150", 4000U);
|
|
|
|
|
Add(2, 2U, "151", "160", 4001U);
|
|
|
|
|
Add(2, 3U, "161", "179", 4000U);
|
|
|
|
|
Add(2, 4U, "180", "185", 4000U);
|
|
|
|
|
Add(2, 5U, "185", "190", 4000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(2, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(2, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, TrivialMoveMultipleFiles6) {
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 1000u;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 10000001u;
|
|
|
|
|
ioptions_.level_compaction_dynamic_level_bytes = false;
|
|
|
|
|
ioptions_.compaction_pri = kMinOverlappingRatio;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(2, 1U, "100", "150", 3000U);
|
|
|
|
|
Add(2, 2U, "151", "200", 3001U);
|
|
|
|
|
Add(2, 3U, "301", "350", 3000U);
|
|
|
|
|
Add(2, 4U, "451", "400", 3000U);
|
|
|
|
|
Add(2, 5U, "551", "500", 3000U);
|
|
|
|
|
file_map_[5U].first->being_compacted = true;
|
|
|
|
|
Add(2, 6U, "651", "600", 3000U);
|
|
|
|
|
Add(2, 7U, "751", "700", 3000U);
|
|
|
|
|
Add(2, 8U, "851", "900", 3000U);
|
|
|
|
|
|
|
|
|
|
Add(3, 15U, "120", "130", 700U);
|
|
|
|
|
Add(3, 16U, "170", "180", 700U);
|
|
|
|
|
Add(3, 17U, "220", "230", 700U);
|
|
|
|
|
Add(3, 18U, "870", "880", 700U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_TRUE(compaction->IsTrivialMove());
|
|
|
|
|
ASSERT_EQ(1, compaction->num_input_levels());
|
|
|
|
|
// Since the next file is being compacted. Stopping at 3 and 4.
|
|
|
|
|
ASSERT_EQ(2, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(4, compaction->input(0, 1)->fd.GetNumber());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, CacheNextCompactionIndex) {
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 100000000000u;
|
|
|
|
|
|
|
|
|
|
Add(1 /* level */, 1U /* file_number */, "100" /* smallest */,
|
|
|
|
|
"149" /* largest */, 1000000000U /* file_size */);
|
|
|
|
|
file_map_[1U].first->being_compacted = true;
|
|
|
|
|
Add(1 /* level */, 2U /* file_number */, "150" /* smallest */,
|
|
|
|
|
"199" /* largest */, 900000000U /* file_size */);
|
|
|
|
|
Add(1 /* level */, 3U /* file_number */, "200" /* smallest */,
|
|
|
|
|
"249" /* largest */, 800000000U /* file_size */);
|
|
|
|
|
Add(1 /* level */, 4U /* file_number */, "250" /* smallest */,
|
|
|
|
|
"299" /* largest */, 700000000U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 5U /* file_number */, "150" /* smallest */,
|
|
|
|
|
"199" /* largest */, 100U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 6U /* file_number */, "200" /* smallest */,
|
|
|
|
|
"240" /* largest */, 1U /* file_size */);
|
|
|
|
|
Add(2 /* level */, 7U /* file_number */, "260" /* smallest */,
|
|
|
|
|
"270" /* largest */, 1U /* file_size */);
|
|
|
|
|
file_map_[5U].first->being_compacted = true;
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(2, vstorage_->NextCompactionIndex(1 /* level */));
|
|
|
|
|
|
|
|
|
|
compaction.reset(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
ASSERT_EQ(4U, compaction->input(0, 0)->fd.GetNumber());
|
|
|
|
|
ASSERT_EQ(3, vstorage_->NextCompactionIndex(1 /* level */));
|
|
|
|
|
|
|
|
|
|
compaction.reset(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() == nullptr);
|
|
|
|
|
ASSERT_EQ(4, vstorage_->NextCompactionIndex(1 /* level */));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IntraL0MaxCompactionBytesNotHit) {
|
|
|
|
|
// Intra L0 compaction triggers only if there are at least
|
|
|
|
|
// level0_file_num_compaction_trigger + 2 L0 files.
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 1000000u;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// All 5 L0 files will be picked for intra L0 compaction. The one L1 file
|
|
|
|
|
// spans entire L0 key range and is marked as being compacted to avoid
|
|
|
|
|
// L0->L1 compaction.
|
Fix corruption with intra-L0 on ingested files (#5958)
Summary:
## Problem Description
Our process was abort when it call `CheckConsistency`. And the information in `stderr` show that "`L0 files seqno 3001491972 3004797440 vs. 3002875611 3004524421` ". Here are the causes of the accident I investigated.
* RocksDB will call `CheckConsistency` whenever `MANIFEST` file is update. It will check sequence number interval of every file, except files which were ingested.
* When one file is ingested into RocksDB, it will be assigned the value of global sequence number, and the minimum and maximum seqno of this file are equal, which are both equal to global sequence number.
* `CheckConsistency` determines whether the file is ingested by whether the smallest and largest seqno of an sstable file are equal.
* If IntraL0Compaction picks one sst which was ingested just now and compacted it into another sst, the `smallest_seqno` of this new file will be smaller than his `largest_seqno`.
* If more than one ingested file was ingested before memtable schedule flush, and they all compact into one new sstable file by `IntraL0Compaction`. The sequence interval of this new file will be included in the interval of the memtable. So `CheckConsistency` will return a `Corruption`.
* If a sstable was ingested after the memtable was schedule to flush, which would assign a larger seqno to it than memtable. Then the file was compacted with other files (these files were all flushed before the memtable) in L0 into one file. This compaction start before the flush job of memtable start, but completed after the flush job finish. So this new file produced by the compaction (we call it s1) would have a larger interval of sequence number than the file produced by flush (we call it s2). **But there was still some data in s1 written into RocksDB before the s2, so it's possible that some data in s2 was cover by old data in s1.** Of course, it would also make a `Corruption` because of overlap of seqno. There is the relationship of the files:
> s1.smallest_seqno < s2.smallest_seqno < s2.largest_seqno < s1.largest_seqno
So I skip pick sst file which was ingested in function `FindIntraL0Compaction `
## Reason
Here is my bug report: https://github.com/facebook/rocksdb/issues/5913
There are two situations that can cause the check to fail.
### First situation：
- First we ingest five external sst into Rocksdb, and they happened to be ingested in L0. and there had been some data in memtable, which make the smallest sequence number of memtable is less than which of sst that we ingest.
- If there had been one compaction job which compacted sst from L0 to L1, `LevelCompactionPicker` would trigger a `IntraL0Compaction` which would compact this five sst from L0 to L0. We call this sst A, which was merged from five ingested sst.
- Then some data was put into memtable, and memtable was flushed to L0. We called this sst B.
- RocksDB check consistency , and find the `smallest_seqno` of B is less than that of A and crash. Because A was merged from five sst, the smallest sequence number of it was less than the biggest sequece number of itself, so RocksDB could not tell if A was produce by ingested.
### Secondary situaion
- First we have flushed many sst in L0, we call them [s1, s2, s3].
- There is an immutable memtable request to be flushed, but because flush thread is busy, so it has not been picked. we call it m1. And at the moment, one sst is ingested into L0. We call it s4. Because s4 is ingested after m1 became immutable memtable, so it has a larger log sequence number than m1.
- m1 is flushed in L0. because it is small, this flush job finish quickly. we call it s5.
- [s1, s2, s3, s4] are compacted into one sst to L0, by IntraL0Compaction. We call it s6.
- compacted 4@0 files to L0
- When s6 is added into manifest, the corruption happened. because the largest sequence number of s6 is equal to s4, and they are both larger than that of s5. But because s1 is older than m1, so the smallest sequence number of s6 is smaller than that of s5.
- s6.smallest_seqno < s5.smallest_seqno < s5.largest_seqno < s6.largest_seqno
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5958
Differential Revision: D18601316
fbshipit-source-id: 5fe54b3c9af52a2e1400728f565e895cde1c7267
5 years ago
|
|
|
Add(0, 1U, "100", "150", 200000U, 0, 100, 101);
|
|
|
|
|
Add(0, 2U, "151", "200", 200000U, 0, 102, 103);
|
|
|
|
|
Add(0, 3U, "201", "250", 200000U, 0, 104, 105);
|
|
|
|
|
Add(0, 4U, "251", "300", 200000U, 0, 106, 107);
|
|
|
|
|
Add(0, 5U, "301", "350", 200000U, 0, 108, 109);
|
|
|
|
|
Add(1, 6U, "100", "350", 200000U, 0, 110, 111);
|
|
|
|
|
vstorage_->LevelFiles(1)[0]->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(5U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(CompactionReason::kLevelL0FilesNum,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, IntraL0MaxCompactionBytesHit) {
|
|
|
|
|
// Intra L0 compaction triggers only if there are at least
|
|
|
|
|
// level0_file_num_compaction_trigger + 2 L0 files.
|
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|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 999999u;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
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|
|
|
|
// 4 out of 5 L0 files will be picked for intra L0 compaction due to
|
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|
|
// max_compaction_bytes limit (the minimum number of files for triggering
|
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|
|
|
// intra L0 compaction is 4). The one L1 file spans entire L0 key range and
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|
|
// is marked as being compacted to avoid L0->L1 compaction.
|
Fix corruption with intra-L0 on ingested files (#5958)
Summary:
## Problem Description
Our process was abort when it call `CheckConsistency`. And the information in `stderr` show that "`L0 files seqno 3001491972 3004797440 vs. 3002875611 3004524421` ". Here are the causes of the accident I investigated.
* RocksDB will call `CheckConsistency` whenever `MANIFEST` file is update. It will check sequence number interval of every file, except files which were ingested.
* When one file is ingested into RocksDB, it will be assigned the value of global sequence number, and the minimum and maximum seqno of this file are equal, which are both equal to global sequence number.
* `CheckConsistency` determines whether the file is ingested by whether the smallest and largest seqno of an sstable file are equal.
* If IntraL0Compaction picks one sst which was ingested just now and compacted it into another sst, the `smallest_seqno` of this new file will be smaller than his `largest_seqno`.
* If more than one ingested file was ingested before memtable schedule flush, and they all compact into one new sstable file by `IntraL0Compaction`. The sequence interval of this new file will be included in the interval of the memtable. So `CheckConsistency` will return a `Corruption`.
* If a sstable was ingested after the memtable was schedule to flush, which would assign a larger seqno to it than memtable. Then the file was compacted with other files (these files were all flushed before the memtable) in L0 into one file. This compaction start before the flush job of memtable start, but completed after the flush job finish. So this new file produced by the compaction (we call it s1) would have a larger interval of sequence number than the file produced by flush (we call it s2). **But there was still some data in s1 written into RocksDB before the s2, so it's possible that some data in s2 was cover by old data in s1.** Of course, it would also make a `Corruption` because of overlap of seqno. There is the relationship of the files:
> s1.smallest_seqno < s2.smallest_seqno < s2.largest_seqno < s1.largest_seqno
So I skip pick sst file which was ingested in function `FindIntraL0Compaction `
## Reason
Here is my bug report: https://github.com/facebook/rocksdb/issues/5913
There are two situations that can cause the check to fail.
### First situation：
- First we ingest five external sst into Rocksdb, and they happened to be ingested in L0. and there had been some data in memtable, which make the smallest sequence number of memtable is less than which of sst that we ingest.
- If there had been one compaction job which compacted sst from L0 to L1, `LevelCompactionPicker` would trigger a `IntraL0Compaction` which would compact this five sst from L0 to L0. We call this sst A, which was merged from five ingested sst.
- Then some data was put into memtable, and memtable was flushed to L0. We called this sst B.
- RocksDB check consistency , and find the `smallest_seqno` of B is less than that of A and crash. Because A was merged from five sst, the smallest sequence number of it was less than the biggest sequece number of itself, so RocksDB could not tell if A was produce by ingested.
### Secondary situaion
- First we have flushed many sst in L0, we call them [s1, s2, s3].
- There is an immutable memtable request to be flushed, but because flush thread is busy, so it has not been picked. we call it m1. And at the moment, one sst is ingested into L0. We call it s4. Because s4 is ingested after m1 became immutable memtable, so it has a larger log sequence number than m1.
- m1 is flushed in L0. because it is small, this flush job finish quickly. we call it s5.
- [s1, s2, s3, s4] are compacted into one sst to L0, by IntraL0Compaction. We call it s6.
- compacted 4@0 files to L0
- When s6 is added into manifest, the corruption happened. because the largest sequence number of s6 is equal to s4, and they are both larger than that of s5. But because s1 is older than m1, so the smallest sequence number of s6 is smaller than that of s5.
- s6.smallest_seqno < s5.smallest_seqno < s5.largest_seqno < s6.largest_seqno
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5958
Differential Revision: D18601316
fbshipit-source-id: 5fe54b3c9af52a2e1400728f565e895cde1c7267
5 years ago
|
|
|
Add(0, 1U, "100", "150", 200000U, 0, 100, 101);
|
|
|
|
|
Add(0, 2U, "151", "200", 200000U, 0, 102, 103);
|
|
|
|
|
Add(0, 3U, "201", "250", 200000U, 0, 104, 105);
|
|
|
|
|
Add(0, 4U, "251", "300", 200000U, 0, 106, 107);
|
|
|
|
|
Add(0, 5U, "301", "350", 200000U, 0, 108, 109);
|
|
|
|
|
Add(1, 6U, "100", "350", 200000U, 0, 109, 110);
|
|
|
|
|
vstorage_->LevelFiles(1)[0]->being_compacted = true;
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction.get() != nullptr);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(4U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(CompactionReason::kLevelL0FilesNum,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
}
|
|
|
|
|
|
Fix corruption with intra-L0 on ingested files (#5958)
Summary:
## Problem Description
Our process was abort when it call `CheckConsistency`. And the information in `stderr` show that "`L0 files seqno 3001491972 3004797440 vs. 3002875611 3004524421` ". Here are the causes of the accident I investigated.
* RocksDB will call `CheckConsistency` whenever `MANIFEST` file is update. It will check sequence number interval of every file, except files which were ingested.
* When one file is ingested into RocksDB, it will be assigned the value of global sequence number, and the minimum and maximum seqno of this file are equal, which are both equal to global sequence number.
* `CheckConsistency` determines whether the file is ingested by whether the smallest and largest seqno of an sstable file are equal.
* If IntraL0Compaction picks one sst which was ingested just now and compacted it into another sst, the `smallest_seqno` of this new file will be smaller than his `largest_seqno`.
* If more than one ingested file was ingested before memtable schedule flush, and they all compact into one new sstable file by `IntraL0Compaction`. The sequence interval of this new file will be included in the interval of the memtable. So `CheckConsistency` will return a `Corruption`.
* If a sstable was ingested after the memtable was schedule to flush, which would assign a larger seqno to it than memtable. Then the file was compacted with other files (these files were all flushed before the memtable) in L0 into one file. This compaction start before the flush job of memtable start, but completed after the flush job finish. So this new file produced by the compaction (we call it s1) would have a larger interval of sequence number than the file produced by flush (we call it s2). **But there was still some data in s1 written into RocksDB before the s2, so it's possible that some data in s2 was cover by old data in s1.** Of course, it would also make a `Corruption` because of overlap of seqno. There is the relationship of the files:
> s1.smallest_seqno < s2.smallest_seqno < s2.largest_seqno < s1.largest_seqno
So I skip pick sst file which was ingested in function `FindIntraL0Compaction `
## Reason
Here is my bug report: https://github.com/facebook/rocksdb/issues/5913
There are two situations that can cause the check to fail.
### First situation：
- First we ingest five external sst into Rocksdb, and they happened to be ingested in L0. and there had been some data in memtable, which make the smallest sequence number of memtable is less than which of sst that we ingest.
- If there had been one compaction job which compacted sst from L0 to L1, `LevelCompactionPicker` would trigger a `IntraL0Compaction` which would compact this five sst from L0 to L0. We call this sst A, which was merged from five ingested sst.
- Then some data was put into memtable, and memtable was flushed to L0. We called this sst B.
- RocksDB check consistency , and find the `smallest_seqno` of B is less than that of A and crash. Because A was merged from five sst, the smallest sequence number of it was less than the biggest sequece number of itself, so RocksDB could not tell if A was produce by ingested.
### Secondary situaion
- First we have flushed many sst in L0, we call them [s1, s2, s3].
- There is an immutable memtable request to be flushed, but because flush thread is busy, so it has not been picked. we call it m1. And at the moment, one sst is ingested into L0. We call it s4. Because s4 is ingested after m1 became immutable memtable, so it has a larger log sequence number than m1.
- m1 is flushed in L0. because it is small, this flush job finish quickly. we call it s5.
- [s1, s2, s3, s4] are compacted into one sst to L0, by IntraL0Compaction. We call it s6.
- compacted 4@0 files to L0
- When s6 is added into manifest, the corruption happened. because the largest sequence number of s6 is equal to s4, and they are both larger than that of s5. But because s1 is older than m1, so the smallest sequence number of s6 is smaller than that of s5.
- s6.smallest_seqno < s5.smallest_seqno < s5.largest_seqno < s6.largest_seqno
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5958
Differential Revision: D18601316
fbshipit-source-id: 5fe54b3c9af52a2e1400728f565e895cde1c7267
5 years ago
|
|
|
|
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedCompactionFullOverlap) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
// This test covers the case where a "regular" universal compaction is
|
|
|
|
|
// scheduled first, followed by a delete triggered compaction. The latter
|
|
|
|
|
// should fail
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550, /*compensated_file_size*/ 0,
|
|
|
|
|
/*marked_for_compact*/ false, /* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 3);
|
|
|
|
|
Add(0, 2U, "201", "250", 2 * kFileSize, 0, 401, 450,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 2);
|
|
|
|
|
Add(0, 4U, "260", "300", 4 * kFileSize, 0, 260, 300,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 1);
|
|
|
|
|
Add(3, 5U, "010", "080", 8 * kFileSize, 0, 200, 251);
|
|
|
|
|
Add(4, 3U, "301", "350", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 6U, "501", "750", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a compaction to reduce sorted runs
|
|
|
|
|
ASSERT_EQ(CompactionReason::kUniversalSortedRunNum,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
|
|
|
|
|
AddVersionStorage();
|
|
|
|
|
// Simulate a flush and mark the file for compaction
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Add(0, 7U, "150", "200", kFileSize, 0, 551, 600, 0, true,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 4);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction2(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_FALSE(compaction2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedCompactionFullOverlap2) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
// This test covers the case where a delete triggered compaction is
|
|
|
|
|
// scheduled first, followed by a "regular" compaction. The latter
|
|
|
|
|
// should fail
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// Mark file number 4 for compaction
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Add(0, 4U, "260", "300", 4 * kFileSize, 0, 260, 300, 0, true,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 1);
|
|
|
|
|
Add(3, 5U, "240", "290", 8 * kFileSize, 0, 201, 250);
|
|
|
|
|
Add(4, 3U, "301", "350", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 6U, "501", "750", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a delete triggered compaction
|
|
|
|
|
ASSERT_EQ(CompactionReason::kFilesMarkedForCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(3, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
|
|
|
|
|
AddVersionStorage();
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550, /*compensated_file_size*/ 0,
|
|
|
|
|
/*marked_for_compact*/ false, /* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 3);
|
|
|
|
|
Add(0, 2U, "201", "250", 2 * kFileSize, 0, 401, 450,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 2);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction2(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_FALSE(compaction2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedCompactionStartOutputOverlap) {
|
|
|
|
|
// The case where universal periodic compaction can be picked
|
|
|
|
|
// with some newer files being compacted.
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
|
|
|
|
|
bool input_level_overlap = false;
|
|
|
|
|
bool output_level_overlap = false;
|
|
|
|
|
// Let's mark 2 files in 2 different levels for compaction. The
|
|
|
|
|
// compaction picker will randomly pick one, so use the sync point to
|
|
|
|
|
// ensure a deterministic order. Loop until both cases are covered
|
|
|
|
|
size_t random_index = 0;
|
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
|
|
|
"CompactionPicker::PickFilesMarkedForCompaction", [&](void* arg) {
|
|
|
|
|
size_t* index = static_cast<size_t*>(arg);
|
|
|
|
|
*index = random_index;
|
|
|
|
|
});
|
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
|
while (!input_level_overlap || !output_level_overlap) {
|
|
|
|
|
// Ensure that the L0 file gets picked first
|
|
|
|
|
random_index = !input_level_overlap ? 0 : 1;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(5, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "260", "300", 4 * kFileSize, 0, 260, 300, 0, true);
|
|
|
|
|
Add(3, 2U, "010", "020", 2 * kFileSize, 0, 201, 248);
|
|
|
|
|
Add(3, 3U, "250", "270", 2 * kFileSize, 0, 202, 249);
|
|
|
|
|
Add(3, 4U, "290", "310", 2 * kFileSize, 0, 203, 250);
|
|
|
|
|
Add(3, 5U, "310", "320", 2 * kFileSize, 0, 204, 251, 0, true);
|
|
|
|
|
Add(4, 6U, "301", "350", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
Add(4, 7U, "501", "750", 8 * kFileSize, 0, 101, 150);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a delete triggered compaction
|
|
|
|
|
ASSERT_EQ(CompactionReason::kFilesMarkedForCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_TRUE(compaction->start_level() == 0 ||
|
|
|
|
|
compaction->start_level() == 3);
|
|
|
|
|
if (compaction->start_level() == 0) {
|
|
|
|
|
// The L0 file was picked. The next compaction will detect an
|
|
|
|
|
// overlap on its input level
|
|
|
|
|
input_level_overlap = true;
|
|
|
|
|
ASSERT_EQ(3, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(1));
|
|
|
|
|
} else {
|
|
|
|
|
// The level 3 file was picked. The next compaction will pick
|
|
|
|
|
// the L0 file and will detect overlap when adding output
|
|
|
|
|
// level inputs
|
|
|
|
|
output_level_overlap = true;
|
|
|
|
|
ASSERT_EQ(4, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vstorage_->ComputeCompactionScore(ioptions_, mutable_cf_options_);
|
|
|
|
|
// After recomputing the compaction score, only one marked file will remain
|
|
|
|
|
random_index = 0;
|
|
|
|
|
std::unique_ptr<Compaction> compaction2(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_FALSE(compaction2);
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedL0NoOverlap) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
// This test covers the case where a delete triggered compaction is
|
|
|
|
|
// scheduled and should result in a full compaction
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// Mark file number 4 for compaction
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300, 0, true);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250);
|
|
|
|
|
Add(0, 3U, "301", "350", 4 * kFileSize, 0, 101, 150);
|
|
|
|
|
Add(0, 6U, "501", "750", 8 * kFileSize, 0, 50, 100);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a delete triggered compaction
|
|
|
|
|
ASSERT_EQ(CompactionReason::kFilesMarkedForCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(4U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_TRUE(file_map_[4].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[5].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[3].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[6].first->being_compacted);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedL0WithOverlap) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
// This test covers the case where a file is being compacted, and a
|
|
|
|
|
// delete triggered compaction is then scheduled. The latter should stop
|
|
|
|
|
// at the first file being compacted
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// Mark file number 4 for compaction
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300, 0, true);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250);
|
|
|
|
|
Add(0, 3U, "301", "350", 4 * kFileSize, 0, 101, 150);
|
|
|
|
|
Add(0, 6U, "501", "750", 8 * kFileSize, 0, 50, 100);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
file_map_[3].first->being_compacted = true;
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a delete triggered compaction
|
|
|
|
|
ASSERT_EQ(CompactionReason::kFilesMarkedForCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(2U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_TRUE(file_map_[4].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[5].first->being_compacted);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedL0Overlap2) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
// This test covers the case where a delete triggered compaction is
|
|
|
|
|
// scheduled first, followed by a "regular" compaction. The latter
|
|
|
|
|
// should fail
|
|
|
|
|
NewVersionStorage(1, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// Mark file number 5 for compaction
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 4);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250, 0, true,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 3);
|
|
|
|
|
Add(0, 3U, "301", "350", 4 * kFileSize, 0, 101, 150,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 2);
|
|
|
|
|
Add(0, 6U, "501", "750", 8 * kFileSize, 0, 50, 100,
|
|
|
|
|
/*compensated_file_size*/ 0, /*marked_for_compact*/ false,
|
|
|
|
|
/* temperature*/ Temperature::kUnknown,
|
|
|
|
|
/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
|
|
|
|
|
/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
|
|
|
|
|
/*epoch_number*/ 1);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
// Validate that its a delete triggered compaction
|
|
|
|
|
ASSERT_EQ(CompactionReason::kFilesMarkedForCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(0, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_TRUE(file_map_[5].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[3].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[6].first->being_compacted);
|
|
|
|
|
|
|
|
|
|
AddVersionStorage();
|
Sort L0 files by newly introduced epoch_num (#10922)
Summary:
**Context:**
Sorting L0 files by `largest_seqno` has at least two inconvenience:
- File ingestion and compaction involving ingested files can create files of overlapping seqno range with the existing files. `force_consistency_check=true` will catch such overlap seqno range even those harmless overlap.
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n")
- insert k1@1 to memtable m1
- ingest file s1 with k2@2, ingest file s2 with k3@3
- insert k4@4 to m1
- compact files s1, s2 and result in new file s3 of seqno range [2, 3]
- flush m1 and result in new file s4 of seqno range [1, 4]. And `force_consistency_check=true` will think s4 and s3 has file reordering corruption that might cause retuning an old value of k1
- However such caught corruption is a false positive since s1, s2 will not have overlapped keys with k1 or whatever inserted into m1 before ingest file s1 by the requirement of file ingestion (otherwise the m1 will be flushed first before any of the file ingestion completes). Therefore there in fact isn't any file reordering corruption.
- Single delete can decrease a file's largest seqno and ordering by `largest_seqno` can introduce a wrong ordering hence file reordering corruption
- For example, consider the following sequence of events ("key@n" indicates key at seqno "n", Credit to ajkr for this example)
- an existing SST s1 contains only k1@1
- insert k1@2 to memtable m1
- ingest file s2 with k3@3, ingest file s3 with k4@4
- insert single delete k5@5 in m1
- flush m1 and result in new file s4 of seqno range [2, 5]
- compact s1, s2, s3 and result in new file s5 of seqno range [1, 4]
- compact s4 and result in new file s6 of seqno range [2] due to single delete
- By the last step, we have file ordering by largest seqno (">" means "newer") : s5 > s6 while s6 contains a newer version of the k1's value (i.e, k1@2) than s5, which is a real reordering corruption. While this can be caught by `force_consistency_check=true`, there isn't a good way to prevent this from happening if ordering by `largest_seqno`
Therefore, we are redesigning the sorting criteria of L0 files and avoid above inconvenience. Credit to ajkr , we now introduce `epoch_num` which describes the order of a file being flushed or ingested/imported (compaction output file will has the minimum `epoch_num` among input files'). This will avoid the above inconvenience in the following ways:
- In the first case above, there will no longer be overlap seqno range check in `force_consistency_check=true` but `epoch_number` ordering check. This will result in file ordering s1 < s2 < s4 (pre-compaction) and s3 < s4 (post-compaction) which won't trigger false positive corruption. See test class `DBCompactionTestL0FilesMisorderCorruption*` for more.
- In the second case above, this will result in file ordering s1 < s2 < s3 < s4 (pre-compacting s1, s2, s3), s5 < s4 (post-compacting s1, s2, s3), s5 < s6 (post-compacting s4), which are correct file ordering without causing any corruption.
**Summary:**
- Introduce `epoch_number` stored per `ColumnFamilyData` and sort CF's L0 files by their assigned `epoch_number` instead of `largest_seqno`.
- `epoch_number` is increased and assigned upon `VersionEdit::AddFile()` for flush (or similarly for WriteLevel0TableForRecovery) and file ingestion (except for allow_behind_true, which will always get assigned as the `kReservedEpochNumberForFileIngestedBehind`)
- Compaction output file is assigned with the minimum `epoch_number` among input files'
- Refit level: reuse refitted file's epoch_number
- Other paths needing `epoch_number` treatment:
- Import column families: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`
- Repair: reuse file's epoch_number if exists. If not, assign one based on `NewestFirstBySeqNo`.
- Assigning new epoch_number to a file and adding this file to LSM tree should be atomic. This is guaranteed by us assigning epoch_number right upon `VersionEdit::AddFile()` where this version edit will be apply to LSM tree shape right after by holding the db mutex (e.g, flush, file ingestion, import column family) or by there is only 1 ongoing edit per CF (e.g, WriteLevel0TableForRecovery, Repair).
- Assigning the minimum input epoch number to compaction output file won't misorder L0 files (even through later `Refit(target_level=0)`). It's due to for every key "k" in the input range, a legit compaction will cover a continuous epoch number range of that key. As long as we assign the key "k" the minimum input epoch number, it won't become newer or older than the versions of this key that aren't included in this compaction hence no misorder.
- Persist `epoch_number` of each file in manifest and recover `epoch_number` on db recovery
- Backward compatibility with old db without `epoch_number` support is guaranteed by assigning `epoch_number` to recovered files by `NewestFirstBySeqno` order. See `VersionStorageInfo::RecoverEpochNumbers()` for more
- Forward compatibility with manifest is guaranteed by flexibility of `NewFileCustomTag`
- Replace `force_consistent_check` on L0 with `epoch_number` and remove false positive check like case 1 with `largest_seqno` above
- Due to backward compatibility issue, we might encounter files with missing epoch number at the beginning of db recovery. We will still use old L0 sorting mechanism (`NewestFirstBySeqno`) to check/sort them till we infer their epoch number. See usages of `EpochNumberRequirement`.
- Remove fix https://github.com/facebook/rocksdb/pull/5958#issue-511150930 and their outdated tests to file reordering corruption because such fix can be replaced by this PR.
- Misc:
- update existing tests with `epoch_number` so make check will pass
- update https://github.com/facebook/rocksdb/pull/5958#issue-511150930 tests to verify corruption is fixed using `epoch_number` and cover universal/fifo compaction/CompactRange/CompactFile cases
- assert db_mutex is held for a few places before calling ColumnFamilyData::NewEpochNumber()
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10922
Test Plan:
- `make check`
- New unit tests under `db/db_compaction_test.cc`, `db/db_test2.cc`, `db/version_builder_test.cc`, `db/repair_test.cc`
- Updated tests (i.e, `DBCompactionTestL0FilesMisorderCorruption*`) under https://github.com/facebook/rocksdb/pull/5958#issue-511150930
- [Ongoing] Compatibility test: manually run https://github.com/ajkr/rocksdb/commit/36a5686ec012f35a4371e409aa85c404ca1c210d (with file ingestion off for running the `.orig` binary to prevent this bug affecting upgrade/downgrade formality checking) for 1 hour on `simple black/white box`, `cf_consistency/txn/enable_ts with whitebox + test_best_efforts_recovery with blackbox`
- [Ongoing] normal db stress test
- [Ongoing] db stress test with aggressive value https://github.com/facebook/rocksdb/pull/10761
Reviewed By: ajkr
Differential Revision: D41063187
Pulled By: hx235
fbshipit-source-id: 826cb23455de7beaabe2d16c57682a82733a32a9
2 years ago
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Add(0, 1U, "150", "200", kFileSize, 0, 500, 550, /*compensated_file_size*/ 0,
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/*marked_for_compact*/ false,
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/* temperature*/ Temperature::kUnknown,
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/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
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/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
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/*epoch_number*/ 6);
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Add(0, 2U, "201", "250", kFileSize, 0, 401, 450, /*compensated_file_size*/ 0,
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/*marked_for_compact*/ false,
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/* temperature*/ Temperature::kUnknown,
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/*oldest_ancestor_time*/ kUnknownOldestAncesterTime,
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/*ts_of_smallest*/ Slice(), /*ts_of_largest*/ Slice(),
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/*epoch_number*/ 5);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction2(
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universal_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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&log_buffer_));
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ASSERT_TRUE(compaction2);
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ASSERT_EQ(3U, compaction->num_input_files(0));
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ASSERT_TRUE(file_map_[1].first->being_compacted);
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ASSERT_TRUE(file_map_[2].first->being_compacted);
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ASSERT_TRUE(file_map_[4].first->being_compacted);
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}
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TEST_F(CompactionPickerTest, UniversalMarkedManualCompaction) {
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const uint64_t kFileSize = 100000;
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const int kNumLevels = 7;
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// This test makes sure the `files_marked_for_compaction_` is updated after
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// creating manual compaction.
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ioptions_.compaction_style = kCompactionStyleUniversal;
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
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// Add 3 files marked for compaction
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Add(0, 3U, "301", "350", 4 * kFileSize, 0, 101, 150, 0, true);
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Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300, 0, true);
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Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250, 0, true);
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UpdateVersionStorageInfo();
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// All 3 files are marked for compaction
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ASSERT_EQ(3U, vstorage_->FilesMarkedForCompaction().size());
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bool manual_conflict = false;
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InternalKey* manual_end = nullptr;
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std::unique_ptr<Compaction> compaction(
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universal_compaction_picker.CompactRange(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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ColumnFamilyData::kCompactAllLevels, 6, CompactRangeOptions(),
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nullptr, nullptr, &manual_end, &manual_conflict,
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std::numeric_limits<uint64_t>::max(), ""));
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ASSERT_TRUE(compaction);
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ASSERT_EQ(CompactionReason::kManualCompaction,
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compaction->compaction_reason());
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ASSERT_EQ(kNumLevels - 1, compaction->output_level());
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ASSERT_EQ(0, compaction->start_level());
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ASSERT_EQ(3U, compaction->num_input_files(0));
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ASSERT_TRUE(file_map_[3].first->being_compacted);
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ASSERT_TRUE(file_map_[4].first->being_compacted);
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ASSERT_TRUE(file_map_[5].first->being_compacted);
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// After creating the manual compaction, all files should be cleared from
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// `FilesMarkedForCompaction`. So they won't be picked by others.
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ASSERT_EQ(0U, vstorage_->FilesMarkedForCompaction().size());
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}
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TEST_F(CompactionPickerTest, UniversalSizeAmpTierCompactionNonLastLevel) {
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// This test make sure size amplification compaction could still be triggered
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// if the last sorted run is not the last level.
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const uint64_t kFileSize = 100000;
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const int kNumLevels = 7;
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const int kLastLevel = kNumLevels - 1;
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ioptions_.compaction_style = kCompactionStyleUniversal;
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ioptions_.preclude_last_level_data_seconds = 1000;
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mutable_cf_options_.compaction_options_universal
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.max_size_amplification_percent = 200;
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
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Add(0, 100U, "100", "300", 1 * kFileSize);
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Add(0, 101U, "200", "400", 1 * kFileSize);
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Add(4, 90U, "100", "600", 4 * kFileSize);
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Add(5, 80U, "200", "300", 2 * kFileSize);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(
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universal_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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&log_buffer_));
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// Make sure it's a size amp compaction and includes all files
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ASSERT_EQ(compaction->compaction_reason(),
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CompactionReason::kUniversalSizeAmplification);
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ASSERT_EQ(compaction->output_level(), kLastLevel);
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ASSERT_EQ(compaction->input_levels(0)->num_files, 2);
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ASSERT_EQ(compaction->input_levels(4)->num_files, 1);
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ASSERT_EQ(compaction->input_levels(5)->num_files, 1);
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}
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TEST_F(CompactionPickerTest, UniversalSizeRatioTierCompactionLastLevel) {
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// This test makes sure the size amp calculation skips the last level (L6), so
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// size amp compaction is not triggered, instead a size ratio compaction is
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// triggered.
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const uint64_t kFileSize = 100000;
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const int kNumLevels = 7;
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const int kLastLevel = kNumLevels - 1;
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const int kPenultimateLevel = kLastLevel - 1;
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ioptions_.compaction_style = kCompactionStyleUniversal;
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ioptions_.preclude_last_level_data_seconds = 1000;
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mutable_cf_options_.compaction_options_universal
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.max_size_amplification_percent = 200;
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
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Add(0, 100U, "100", "300", 1 * kFileSize);
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Add(0, 101U, "200", "400", 1 * kFileSize);
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Add(5, 90U, "100", "600", 4 * kFileSize);
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Add(6, 80U, "200", "300", 2 * kFileSize);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(
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universal_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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&log_buffer_));
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// Internally, size amp compaction is evaluated before size ratio compaction.
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// Here to make sure it's size ratio compaction instead of size amp
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ASSERT_EQ(compaction->compaction_reason(),
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CompactionReason::kUniversalSizeRatio);
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ASSERT_EQ(compaction->output_level(), kPenultimateLevel - 1);
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ASSERT_EQ(compaction->input_levels(0)->num_files, 2);
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ASSERT_EQ(compaction->input_levels(5)->num_files, 0);
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ASSERT_EQ(compaction->input_levels(6)->num_files, 0);
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}
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TEST_F(CompactionPickerTest, UniversalSizeAmpTierCompactionNotSuport) {
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// Tiered compaction only support level_num > 2 (otherwise the penultimate
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// level is going to be level 0, which may make thing more complicated), so
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// when there's only 2 level, still treating level 1 as the last level for
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// size amp compaction
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const uint64_t kFileSize = 100000;
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const int kNumLevels = 2;
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const int kLastLevel = kNumLevels - 1;
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ioptions_.compaction_style = kCompactionStyleUniversal;
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ioptions_.preclude_last_level_data_seconds = 1000;
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mutable_cf_options_.compaction_options_universal
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.max_size_amplification_percent = 200;
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
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Add(0, 100U, "100", "300", 1 * kFileSize);
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Add(0, 101U, "200", "400", 1 * kFileSize);
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Add(0, 90U, "100", "600", 4 * kFileSize);
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Add(1, 80U, "200", "300", 2 * kFileSize);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(
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universal_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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&log_buffer_));
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// size amp compaction is still triggered even preclude_last_level is set
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ASSERT_EQ(compaction->compaction_reason(),
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CompactionReason::kUniversalSizeAmplification);
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ASSERT_EQ(compaction->output_level(), kLastLevel);
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ASSERT_EQ(compaction->input_levels(0)->num_files, 3);
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ASSERT_EQ(compaction->input_levels(1)->num_files, 1);
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}
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TEST_F(CompactionPickerTest, UniversalSizeAmpTierCompactionLastLevel) {
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// This test makes sure the size amp compaction for tiered storage could still
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// be triggered, but only for non-last-level files
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const uint64_t kFileSize = 100000;
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const int kNumLevels = 7;
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const int kLastLevel = kNumLevels - 1;
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const int kPenultimateLevel = kLastLevel - 1;
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ioptions_.compaction_style = kCompactionStyleUniversal;
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ioptions_.preclude_last_level_data_seconds = 1000;
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mutable_cf_options_.compaction_options_universal
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.max_size_amplification_percent = 200;
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
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Add(0, 100U, "100", "300", 3 * kFileSize);
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Add(0, 101U, "200", "400", 2 * kFileSize);
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Add(5, 90U, "100", "600", 2 * kFileSize);
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Add(6, 80U, "200", "300", 2 * kFileSize);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(
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universal_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
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&log_buffer_));
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// It's a Size Amp compaction, but doesn't include the last level file and
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// output to the penultimate level.
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ASSERT_EQ(compaction->compaction_reason(),
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CompactionReason::kUniversalSizeAmplification);
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ASSERT_EQ(compaction->output_level(), kPenultimateLevel);
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ASSERT_EQ(compaction->input_levels(0)->num_files, 2);
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ASSERT_EQ(compaction->input_levels(5)->num_files, 1);
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ASSERT_EQ(compaction->input_levels(6)->num_files, 0);
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}
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TEST_F(CompactionPickerU64TsTest, Overlap) {
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int num_levels = ioptions_.num_levels;
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NewVersionStorage(num_levels, kCompactionStyleLevel);
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constexpr int level = 0;
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constexpr uint64_t file_number = 20ULL;
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constexpr char smallest[4] = "500";
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constexpr char largest[4] = "600";
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constexpr uint64_t ts_of_smallest = 12345ULL;
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constexpr uint64_t ts_of_largest = 56789ULL;
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{
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std::string ts1;
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PutFixed64(&ts1, ts_of_smallest);
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std::string ts2;
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PutFixed64(&ts2, ts_of_largest);
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Add(level, file_number, smallest, largest,
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/*file_size=*/1U, /*path_id=*/0,
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/*smallest_seq=*/100, /*largest_seq=*/100, /*compensated_file_size=*/0,
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/*marked_for_compact=*/false, /*temperature=*/Temperature::kUnknown,
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/*oldest_ancestor_time=*/kUnknownOldestAncesterTime, ts1, ts2);
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UpdateVersionStorageInfo();
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}
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std::unordered_set<uint64_t> input{file_number};
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std::vector<CompactionInputFiles> input_files;
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ASSERT_OK(level_compaction_picker.GetCompactionInputsFromFileNumbers(
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&input_files, &input, vstorage_.get(), CompactionOptions()));
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std::unique_ptr<Compaction> comp1(level_compaction_picker.CompactFiles(
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CompactionOptions(), input_files, level, vstorage_.get(),
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mutable_cf_options_, mutable_db_options_, /*output_path_id=*/0));
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{
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// [600, ts=50000] to [600, ts=50000] is the range to check.
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// ucmp->Compare(smallest_user_key, c->GetLargestUserKey()) > 0, but
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// ucmp->CompareWithoutTimestamp(smallest_user_key,
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// c->GetLargestUserKey()) == 0.
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// Should still be considered overlapping.
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std::string user_key_with_ts1(largest);
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PutFixed64(&user_key_with_ts1, ts_of_largest - 1);
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std::string user_key_with_ts2(largest);
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PutFixed64(&user_key_with_ts2, ts_of_largest - 1);
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ASSERT_TRUE(level_compaction_picker.RangeOverlapWithCompaction(
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user_key_with_ts1, user_key_with_ts2, level));
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}
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{
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// [500, ts=60000] to [500, ts=60000] is the range to check.
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// ucmp->Compare(largest_user_key, c->GetSmallestUserKey()) < 0, but
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// ucmp->CompareWithoutTimestamp(largest_user_key,
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// c->GetSmallestUserKey()) == 0.
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// Should still be considered overlapping.
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std::string user_key_with_ts1(smallest);
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PutFixed64(&user_key_with_ts1, ts_of_smallest + 1);
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std::string user_key_with_ts2(smallest);
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PutFixed64(&user_key_with_ts2, ts_of_smallest + 1);
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ASSERT_TRUE(level_compaction_picker.RangeOverlapWithCompaction(
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user_key_with_ts1, user_key_with_ts2, level));
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}
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}
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TEST_F(CompactionPickerU64TsTest, CannotTrivialMoveUniversal) {
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constexpr uint64_t kFileSize = 100000;
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mutable_cf_options_.level0_file_num_compaction_trigger = 2;
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mutable_cf_options_.compaction_options_universal.allow_trivial_move = true;
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NewVersionStorage(1, kCompactionStyleUniversal);
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UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
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|
|
UpdateVersionStorageInfo();
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// must return false when there's no files.
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ASSERT_FALSE(universal_compaction_picker.NeedsCompaction(vstorage_.get()));
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std::string ts1;
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PutFixed64(&ts1, 9000);
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std::string ts2;
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PutFixed64(&ts2, 8000);
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std::string ts3;
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|
PutFixed64(&ts3, 7000);
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std::string ts4;
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|
|
PutFixed64(&ts4, 6000);
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|
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|
|
NewVersionStorage(3, kCompactionStyleUniversal);
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|
// A compaction should be triggered and pick file 2
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|
Add(1, 1U, "150", "150", kFileSize, /*path_id=*/0, /*smallest_seq=*/100,
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|
/*largest_seq=*/100, /*compensated_file_size=*/kFileSize,
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|
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|
/*marked_for_compact=*/false, Temperature::kUnknown,
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|
|
|
kUnknownOldestAncesterTime, ts1, ts2);
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|
Add(2, 2U, "150", "150", kFileSize, /*path_id=*/0, /*smallest_seq=*/100,
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|
/*largest_seq=*/100, /*compensated_file_size=*/kFileSize,
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|
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|
|
/*marked_for_compact=*/false, Temperature::kUnknown,
|
|
|
|
|
kUnknownOldestAncesterTime, ts3, ts4);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
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|
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|
|
std::unique_ptr<Compaction> compaction(
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|
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|
|
universal_compaction_picker.PickCompaction(
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|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
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|
|
assert(compaction);
|
|
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|
|
ASSERT_TRUE(!compaction->is_trivial_move());
|
|
|
|
|
}
|
|
|
|
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|
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|
|
class PerKeyPlacementCompactionPickerTest
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|
|
: public CompactionPickerTest,
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|
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public testing::WithParamInterface<bool> {
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public:
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PerKeyPlacementCompactionPickerTest() : CompactionPickerTest() {}
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void SetUp() override { enable_per_key_placement_ = GetParam(); }
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|
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protected:
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|
|
bool enable_per_key_placement_ = false;
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|
|
};
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|
|
TEST_P(PerKeyPlacementCompactionPickerTest, OverlapWithNormalCompaction) {
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|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
|
|
|
"Compaction::SupportsPerKeyPlacement:Enabled", [&](void* arg) {
|
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|
|
|
auto supports_per_key_placement = static_cast<bool*>(arg);
|
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|
|
*supports_per_key_placement = enable_per_key_placement_;
|
|
|
|
|
});
|
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(0, 21U, "100", "150", 60000000U);
|
|
|
|
|
Add(0, 22U, "300", "350", 60000000U);
|
|
|
|
|
Add(5, 40U, "200", "250", 60000000U);
|
|
|
|
|
Add(6, 50U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(level_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(level_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 5, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(21);
|
|
|
|
|
input_set.insert(22);
|
|
|
|
|
input_set.insert(50);
|
|
|
|
|
ASSERT_OK(level_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
level_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 6,
|
|
|
|
|
Compaction::EvaluatePenultimateLevel(vstorage_.get(), ioptions_,
|
|
|
|
|
0, 6)));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest, NormalCompactionOverlap) {
|
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
|
|
|
"Compaction::SupportsPerKeyPlacement:Enabled", [&](void* arg) {
|
|
|
|
|
auto supports_per_key_placement = static_cast<bool*>(arg);
|
|
|
|
|
*supports_per_key_placement = enable_per_key_placement_;
|
|
|
|
|
});
|
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
Add(0, 21U, "100", "150", 60000000U);
|
|
|
|
|
Add(0, 22U, "300", "350", 60000000U);
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(6, 50U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(21);
|
|
|
|
|
input_set.insert(22);
|
|
|
|
|
input_set.insert(50);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(level_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(level_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
input_set.insert(41);
|
|
|
|
|
ASSERT_OK(level_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
level_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest,
|
|
|
|
|
OverlapWithNormalCompactionUniveral) {
|
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
|
|
|
"Compaction::SupportsPerKeyPlacement:Enabled", [&](void* arg) {
|
|
|
|
|
auto supports_per_key_placement = static_cast<bool*>(arg);
|
|
|
|
|
*supports_per_key_placement = enable_per_key_placement_;
|
|
|
|
|
});
|
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 21U, "100", "150", 60000000U);
|
|
|
|
|
Add(0, 22U, "300", "350", 60000000U);
|
|
|
|
|
Add(5, 40U, "200", "250", 60000000U);
|
|
|
|
|
Add(6, 50U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 5, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(21);
|
|
|
|
|
input_set.insert(22);
|
|
|
|
|
input_set.insert(50);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 6,
|
|
|
|
|
Compaction::EvaluatePenultimateLevel(vstorage_.get(), ioptions_,
|
|
|
|
|
0, 6)));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest, NormalCompactionOverlapUniversal) {
|
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
|
|
|
"Compaction::SupportsPerKeyPlacement:Enabled", [&](void* arg) {
|
|
|
|
|
auto supports_per_key_placement = static_cast<bool*>(arg);
|
|
|
|
|
*supports_per_key_placement = enable_per_key_placement_;
|
|
|
|
|
});
|
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
Add(0, 21U, "100", "150", 60000000U);
|
|
|
|
|
Add(0, 22U, "300", "350", 60000000U);
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(6, 50U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(21);
|
|
|
|
|
input_set.insert(22);
|
|
|
|
|
input_set.insert(50);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
input_set.insert(41);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest, PenultimateOverlapUniversal) {
|
|
|
|
|
// This test is make sure the Tiered compaction would lock whole range of
|
|
|
|
|
// both output level and penultimate level
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ioptions_.preclude_last_level_data_seconds = 10000;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// L4: [200, 220] [230, 250] [360, 380]
|
|
|
|
|
// L5:
|
|
|
|
|
// L6: [101, 351]
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(4, 42U, "360", "380", 60000000U);
|
|
|
|
|
Add(6, 60U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// the existing compaction is the 1st L4 file + L6 file
|
|
|
|
|
// then compaction of the 2nd L4 file to L5 (penultimate level) is overlapped
|
|
|
|
|
// when the tiered compaction feature is on.
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
input_set.insert(60);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(41);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
|
|
|
|
|
// compacting the 3rd L4 file is always safe:
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(42);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_FALSE(universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest, LastLevelOnlyOverlapUniversal) {
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ioptions_.preclude_last_level_data_seconds = 10000;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// L4: [200, 220] [230, 250] [360, 380]
|
|
|
|
|
// L5:
|
|
|
|
|
// L6: [101, 351]
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(4, 42U, "360", "380", 60000000U);
|
|
|
|
|
Add(6, 60U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(60);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
// cannot compact file 41 if the preclude_last_level feature is on, otherwise
|
|
|
|
|
// compact file 41 is okay.
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(41);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
|
|
|
|
|
// compacting the 3rd L4 file is always safe:
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(42);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_FALSE(universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest,
|
|
|
|
|
LastLevelOnlyFailPenultimateUniversal) {
|
|
|
|
|
// This is to test last_level only compaction still unable to do the
|
|
|
|
|
// penultimate level compaction if there's already a file in the penultimate
|
|
|
|
|
// level.
|
|
|
|
|
// This should rarely happen in universal compaction, as the non-empty L5
|
|
|
|
|
// should be included in the compaction.
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ioptions_.preclude_last_level_data_seconds = 10000;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// L4: [200, 220]
|
|
|
|
|
// L5: [230, 250]
|
|
|
|
|
// L6: [101, 351]
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(5, 50U, "230", "250", 60000000U);
|
|
|
|
|
Add(6, 60U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(60);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(comp1);
|
|
|
|
|
ASSERT_EQ(comp1->GetPenultimateLevel(), Compaction::kInvalidLevel);
|
|
|
|
|
|
|
|
|
|
// As comp1 cannot be output to the penultimate level, compacting file 40 to
|
|
|
|
|
// L5 is always safe.
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_FALSE(universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 5, Compaction::kInvalidLevel));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp2(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 5, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
ASSERT_TRUE(comp2);
|
|
|
|
|
ASSERT_EQ(Compaction::kInvalidLevel, comp2->GetPenultimateLevel());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest,
|
|
|
|
|
LastLevelOnlyConflictWithOngoingUniversal) {
|
|
|
|
|
// This is to test last_level only compaction still unable to do the
|
|
|
|
|
// penultimate level compaction if there's already an ongoing compaction to
|
|
|
|
|
// the penultimate level
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ioptions_.preclude_last_level_data_seconds = 10000;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// L4: [200, 220] [230, 250] [360, 380]
|
|
|
|
|
// L5:
|
|
|
|
|
// L6: [101, 351]
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(4, 42U, "360", "380", 60000000U);
|
|
|
|
|
Add(6, 60U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// create an ongoing compaction to L5 (penultimate level)
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(40);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 5, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(comp1);
|
|
|
|
|
ASSERT_EQ(comp1->GetPenultimateLevel(), Compaction::kInvalidLevel);
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(60);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(enable_per_key_placement_,
|
|
|
|
|
universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 6,
|
|
|
|
|
Compaction::EvaluatePenultimateLevel(vstorage_.get(), ioptions_,
|
|
|
|
|
6, 6)));
|
|
|
|
|
|
|
|
|
|
if (!enable_per_key_placement_) {
|
|
|
|
|
std::unique_ptr<Compaction> comp2(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
ASSERT_TRUE(comp2);
|
|
|
|
|
ASSERT_EQ(Compaction::kInvalidLevel, comp2->GetPenultimateLevel());
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_P(PerKeyPlacementCompactionPickerTest,
|
|
|
|
|
LastLevelOnlyNoConflictWithOngoingUniversal) {
|
|
|
|
|
// This is similar to `LastLevelOnlyConflictWithOngoingUniversal`, the only
|
|
|
|
|
// change is the ongoing compaction to L5 has no overlap with the last level
|
|
|
|
|
// compaction, so it's safe to move data from the last level to the
|
|
|
|
|
// penultimate level.
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ioptions_.preclude_last_level_data_seconds = 10000;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int num_levels = ioptions_.num_levels;
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
NewVersionStorage(num_levels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// L4: [200, 220] [230, 250] [360, 380]
|
|
|
|
|
// L5:
|
|
|
|
|
// L6: [101, 351]
|
|
|
|
|
Add(4, 40U, "200", "220", 60000000U);
|
|
|
|
|
Add(4, 41U, "230", "250", 60000000U);
|
|
|
|
|
Add(4, 42U, "360", "380", 60000000U);
|
|
|
|
|
Add(6, 60U, "101", "351", 60000000U);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// create an ongoing compaction to L5 (penultimate level)
|
|
|
|
|
CompactionOptions comp_options;
|
|
|
|
|
std::unordered_set<uint64_t> input_set;
|
|
|
|
|
input_set.insert(42);
|
|
|
|
|
std::vector<CompactionInputFiles> input_files;
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> comp1(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 5, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(comp1);
|
|
|
|
|
ASSERT_EQ(comp1->GetPenultimateLevel(), Compaction::kInvalidLevel);
|
|
|
|
|
|
|
|
|
|
input_set.clear();
|
|
|
|
|
input_files.clear();
|
|
|
|
|
input_set.insert(60);
|
|
|
|
|
ASSERT_OK(universal_compaction_picker.GetCompactionInputsFromFileNumbers(
|
|
|
|
|
&input_files, &input_set, vstorage_.get(), comp_options));
|
|
|
|
|
|
|
|
|
|
// always safe to move data up
|
|
|
|
|
ASSERT_FALSE(universal_compaction_picker.FilesRangeOverlapWithCompaction(
|
|
|
|
|
input_files, 6,
|
|
|
|
|
Compaction::EvaluatePenultimateLevel(vstorage_.get(), ioptions_, 6, 6)));
|
|
|
|
|
|
|
|
|
|
// 2 compactions can be run in parallel
|
|
|
|
|
std::unique_ptr<Compaction> comp2(universal_compaction_picker.CompactFiles(
|
|
|
|
|
comp_options, input_files, 6, vstorage_.get(), mutable_cf_options_,
|
|
|
|
|
mutable_db_options_, 0));
|
|
|
|
|
ASSERT_TRUE(comp2);
|
|
|
|
|
if (enable_per_key_placement_) {
|
|
|
|
|
ASSERT_NE(Compaction::kInvalidLevel, comp2->GetPenultimateLevel());
|
|
|
|
|
} else {
|
|
|
|
|
ASSERT_EQ(Compaction::kInvalidLevel, comp2->GetPenultimateLevel());
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
INSTANTIATE_TEST_CASE_P(PerKeyPlacementCompactionPickerTest,
|
|
|
|
|
PerKeyPlacementCompactionPickerTest, ::testing::Bool());
|
|
|
|
|
|
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
|
|
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
|
|
|
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
|
|
|
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
|
|
|
return RUN_ALL_TESTS();
|
|
|
|
|
}
|
