|
|
|
|
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
|
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
|
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
|
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
|
|
|
|
|
|
|
|
#include <limits>
|
|
|
|
|
#include <string>
|
|
|
|
|
#include <utility>
|
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
|
|
|
|
|
|
|
|
#include "db/compaction/compaction.h"
|
|
|
|
|
#include "db/compaction/compaction_picker_fifo.h"
|
|
|
|
|
#include "db/compaction/compaction_picker_level.h"
|
|
|
|
|
#include "db/compaction/compaction_picker_universal.h"
|
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
|
|
|
#include "db/compaction/file_pri.h"
|
|
|
|
|
#include "table/unique_id_impl.h"
|
|
|
|
|
#include "test_util/testharness.h"
|
|
|
|
|
#include "test_util/testutil.h"
|
|
|
|
|
#include "util/string_util.h"
|
|
|
|
|
|
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
|
|
|
|
|
|
class CountingLogger : public Logger {
|
|
|
|
|
public:
|
|
|
|
|
using Logger::Logv;
|
|
|
|
|
void Logv(const char* /*format*/, va_list /*ap*/) override { log_count++; }
|
|
|
|
|
size_t log_count;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
class CompactionPickerTest : public testing::Test {
|
|
|
|
|
public:
|
|
|
|
|
const Comparator* ucmp_;
|
|
|
|
|
InternalKeyComparator icmp_;
|
|
|
|
|
Options options_;
|
|
|
|
|
ImmutableOptions ioptions_;
|
|
|
|
|
MutableCFOptions mutable_cf_options_;
|
|
|
|
|
MutableDBOptions mutable_db_options_;
|
|
|
|
|
LevelCompactionPicker level_compaction_picker;
|
|
|
|
|
std::string cf_name_;
|
|
|
|
|
CountingLogger logger_;
|
|
|
|
|
LogBuffer log_buffer_;
|
|
|
|
|
uint32_t file_num_;
|
|
|
|
|
CompactionOptionsFIFO fifo_options_;
|
|
|
|
|
std::unique_ptr<VersionStorageInfo> vstorage_;
|
|
|
|
|
std::vector<std::unique_ptr<FileMetaData>> files_;
|
|
|
|
|
// does not own FileMetaData
|
|
|
|
|
std::unordered_map<uint32_t, std::pair<FileMetaData*, int>> file_map_;
|
|
|
|
|
// input files to compaction process.
|
|
|
|
|
std::vector<CompactionInputFiles> input_files_;
|
|
|
|
|
int compaction_level_start_;
|
|
|
|
|
|
|
|
|
|
CompactionPickerTest()
|
|
|
|
|
: ucmp_(BytewiseComparator()),
|
|
|
|
|
icmp_(ucmp_),
|
|
|
|
|
ioptions_(options_),
|
|
|
|
|
mutable_cf_options_(options_),
|
|
|
|
|
mutable_db_options_(),
|
|
|
|
|
level_compaction_picker(ioptions_, &icmp_),
|
|
|
|
|
cf_name_("dummy"),
|
|
|
|
|
log_buffer_(InfoLogLevel::INFO_LEVEL, &logger_),
|
|
|
|
|
file_num_(1),
|
|
|
|
|
vstorage_(nullptr) {
|
|
|
|
|
mutable_cf_options_.ttl = 0;
|
|
|
|
|
mutable_cf_options_.periodic_compaction_seconds = 0;
|
|
|
|
|
// ioptions_.compaction_pri = kMinOverlappingRatio has its own set of
|
|
|
|
|
// tests to cover.
|
|
|
|
|
ioptions_.compaction_pri = kByCompensatedSize;
|
|
|
|
|
fifo_options_.max_table_files_size = 1;
|
|
|
|
|
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
|
|
|
|
|
ioptions_.cf_paths.emplace_back("dummy",
|
|
|
|
|
std::numeric_limits<uint64_t>::max());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
~CompactionPickerTest() override {}
|
|
|
|
|
|
|
|
|
|
void NewVersionStorage(int num_levels, CompactionStyle style) {
|
|
|
|
|
DeleteVersionStorage();
|
|
|
|
|
options_.num_levels = num_levels;
|
|
|
|
|
vstorage_.reset(new VersionStorageInfo(&icmp_, ucmp_, options_.num_levels,
|
|
|
|
|
style, nullptr, false));
|
|
|
|
|
vstorage_->PrepareForVersionAppend(ioptions_, mutable_cf_options_);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Create a new VersionStorageInfo object so we can add mode files and then
|
|
|
|
|
// merge it with the existing VersionStorageInfo
|
|
|
|
|
void AddVersionStorage() {
|
|
|
|
|
temp_vstorage_.reset(new VersionStorageInfo(
|
|
|
|
|
&icmp_, ucmp_, options_.num_levels, ioptions_.compaction_style,
|
|
|
|
|
vstorage_.get(), false));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void DeleteVersionStorage() {
|
|
|
|
|
vstorage_.reset();
|
|
|
|
|
temp_vstorage_.reset();
|
|
|
|
|
files_.clear();
|
|
|
|
|
file_map_.clear();
|
|
|
|
|
input_files_.clear();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void Add(int level, uint32_t file_number, const char* smallest,
|
|
|
|
|
const char* largest, uint64_t file_size = 1, uint32_t path_id = 0,
|
|
|
|
|
SequenceNumber smallest_seq = 100, SequenceNumber largest_seq = 100,
|
|
|
|
|
size_t compensated_file_size = 0, bool marked_for_compact = false,
|
|
|
|
|
Temperature temperature = Temperature::kUnknown,
|
|
|
|
|
uint64_t oldest_ancestor_time = kUnknownOldestAncesterTime) {
|
|
|
|
|
VersionStorageInfo* vstorage;
|
|
|
|
|
if (temp_vstorage_) {
|
|
|
|
|
vstorage = temp_vstorage_.get();
|
|
|
|
|
} else {
|
|
|
|
|
vstorage = vstorage_.get();
|
|
|
|
|
}
|
|
|
|
|
assert(level < vstorage->num_levels());
|
|
|
|
|
FileMetaData* f = new FileMetaData(
|
|
|
|
|
file_number, path_id, file_size,
|
|
|
|
|
InternalKey(smallest, smallest_seq, kTypeValue),
|
|
|
|
|
InternalKey(largest, largest_seq, kTypeValue), smallest_seq,
|
|
|
|
|
largest_seq, marked_for_compact, temperature, kInvalidBlobFileNumber,
|
|
|
|
|
kUnknownOldestAncesterTime, kUnknownFileCreationTime,
|
|
|
|
|
kUnknownFileChecksum, kUnknownFileChecksumFuncName,
|
|
|
|
|
kDisableUserTimestamp, kDisableUserTimestamp, 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}});
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
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:
|
|
|
|
|
std::unique_ptr<VersionStorageInfo> temp_vstorage_;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
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_));
|
|
|
|
|
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_));
|
|
|
|
|
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_));
|
|
|
|
|
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_));
|
|
|
|
|
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_));
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
// 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;
|
|
|
|
|
mutable_cf_options_.max_bytes_for_level_base = 10000000;
|
|
|
|
|
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);
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(selected_files[i], compaction->input(0, 0)->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;
|
|
|
|
|
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;
|
|
|
|
|
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, 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 */, 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(1U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(0U, 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(1U, compaction->num_input_levels());
|
|
|
|
|
ASSERT_EQ(1U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_EQ(0U, 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.
|
|
|
|
|
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
|
|
|
|
|
mutable_cf_options_.max_compaction_bytes = 999999u;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// 4 out of 5 L0 files will be picked for intra L0 compaction due to
|
|
|
|
|
// max_compaction_bytes limit (the minimum number of files for triggering
|
|
|
|
|
// intra L0 compaction is 4). 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, 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
|
|
|
TEST_F(CompactionPickerTest, IntraL0ForEarliestSeqno) {
|
|
|
|
|
// 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 = 999999u;
|
|
|
|
|
NewVersionStorage(6, kCompactionStyleLevel);
|
|
|
|
|
|
|
|
|
|
// 4 out of 6 L0 files will be picked for intra L0 compaction due to
|
|
|
|
|
// being_compact limit. And the latest one L0 will be skipped due to earliest
|
|
|
|
|
// seqno. The one L1 file spans entire L0 key range and is marked as being
|
|
|
|
|
// compacted to avoid L0->L1 compaction.
|
|
|
|
|
Add(1, 1U, "100", "350", 200000U, 0, 110, 111);
|
|
|
|
|
Add(0, 2U, "301", "350", 1U, 0, 108, 109);
|
|
|
|
|
Add(0, 3U, "251", "300", 1U, 0, 106, 107);
|
|
|
|
|
Add(0, 4U, "201", "250", 1U, 0, 104, 105);
|
|
|
|
|
Add(0, 5U, "151", "200", 1U, 0, 102, 103);
|
|
|
|
|
Add(0, 6U, "100", "150", 1U, 0, 100, 101);
|
|
|
|
|
Add(0, 7U, "100", "100", 1U, 0, 99, 100);
|
|
|
|
|
vstorage_->LevelFiles(0)[5]->being_compacted = true;
|
|
|
|
|
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_, 107));
|
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
|
|
|
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());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#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);
|
|
|
|
|
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", 2 * kFileSize, 0, 401, 450);
|
|
|
|
|
Add(0, 4U, "260", "300", 4 * kFileSize, 0, 260, 300);
|
|
|
|
|
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
|
|
|
|
|
Add(0, 7U, "150", "200", kFileSize, 0, 551, 600, 0, true);
|
|
|
|
|
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
|
|
|
|
|
Add(0, 4U, "260", "300", 4 * kFileSize, 0, 260, 300, 0, true);
|
|
|
|
|
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();
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", 2 * kFileSize, 0, 401, 450);
|
|
|
|
|
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 4 for compaction
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250, 0, true);
|
|
|
|
|
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(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();
|
|
|
|
|
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
|
|
|
|
|
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
std::unique_ptr<Compaction> compaction2(
|
|
|
|
|
universal_compaction_picker.PickCompaction(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
&log_buffer_));
|
|
|
|
|
ASSERT_TRUE(compaction2);
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_TRUE(file_map_[1].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[2].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[4].first->being_compacted);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TEST_F(CompactionPickerTest, UniversalMarkedManualCompaction) {
|
|
|
|
|
const uint64_t kFileSize = 100000;
|
|
|
|
|
const int kNumLevels = 7;
|
|
|
|
|
|
|
|
|
|
// This test makes sure the `files_marked_for_compaction_` is updated after
|
|
|
|
|
// creating manual compaction.
|
|
|
|
|
ioptions_.compaction_style = kCompactionStyleUniversal;
|
|
|
|
|
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
|
|
|
|
|
|
|
|
|
|
NewVersionStorage(kNumLevels, kCompactionStyleUniversal);
|
|
|
|
|
|
|
|
|
|
// Add 3 files marked for compaction
|
|
|
|
|
Add(0, 3U, "301", "350", 4 * kFileSize, 0, 101, 150, 0, true);
|
|
|
|
|
Add(0, 4U, "260", "300", 1 * kFileSize, 0, 260, 300, 0, true);
|
|
|
|
|
Add(0, 5U, "240", "290", 2 * kFileSize, 0, 201, 250, 0, true);
|
|
|
|
|
UpdateVersionStorageInfo();
|
|
|
|
|
|
|
|
|
|
// All 3 files are marked for compaction
|
|
|
|
|
ASSERT_EQ(3U, vstorage_->FilesMarkedForCompaction().size());
|
|
|
|
|
|
|
|
|
|
bool manual_conflict = false;
|
|
|
|
|
InternalKey* manual_end = nullptr;
|
|
|
|
|
std::unique_ptr<Compaction> compaction(
|
|
|
|
|
universal_compaction_picker.CompactRange(
|
|
|
|
|
cf_name_, mutable_cf_options_, mutable_db_options_, vstorage_.get(),
|
|
|
|
|
ColumnFamilyData::kCompactAllLevels, 6, CompactRangeOptions(),
|
|
|
|
|
nullptr, nullptr, &manual_end, &manual_conflict,
|
|
|
|
|
std::numeric_limits<uint64_t>::max(), ""));
|
|
|
|
|
|
|
|
|
|
ASSERT_TRUE(compaction);
|
|
|
|
|
|
|
|
|
|
ASSERT_EQ(CompactionReason::kManualCompaction,
|
|
|
|
|
compaction->compaction_reason());
|
|
|
|
|
ASSERT_EQ(kNumLevels - 1, compaction->output_level());
|
|
|
|
|
ASSERT_EQ(0, compaction->start_level());
|
|
|
|
|
ASSERT_EQ(3U, compaction->num_input_files(0));
|
|
|
|
|
ASSERT_TRUE(file_map_[3].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[4].first->being_compacted);
|
|
|
|
|
ASSERT_TRUE(file_map_[5].first->being_compacted);
|
|
|
|
|
|
|
|
|
|
// After creating the manual compaction, all files should be cleared from
|
|
|
|
|
// `FilesMarkedForCompaction`. So they won't be picked by others.
|
|
|
|
|
ASSERT_EQ(0U, vstorage_->FilesMarkedForCompaction().size());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
|
|
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
|
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
|
|
|
return RUN_ALL_TESTS();
|
|
|
|
|
}
|
