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rocksdb/db/db_properties_test.cc

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65 KiB

// 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).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <stdio.h>
#include <algorithm>
#include <string>
#include "db/db_test_util.h"
#include "port/stack_trace.h"
#include "rocksdb/listener.h"
#include "rocksdb/options.h"
#include "rocksdb/perf_context.h"
#include "rocksdb/perf_level.h"
#include "rocksdb/table.h"
#include "util/random.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
class DBPropertiesTest : public DBTestBase {
public:
DBPropertiesTest()
: DBTestBase("/db_properties_test", /*env_do_fsync=*/false) {}
};
#ifndef ROCKSDB_LITE
TEST_F(DBPropertiesTest, Empty) {
do {
Options options;
options.env = env_;
options.write_buffer_size = 100000; // Small write buffer
options.allow_concurrent_memtable_write = false;
options = CurrentOptions(options);
CreateAndReopenWithCF({"pikachu"}, options);
std::string num;
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ("0", num);
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ("1", num);
// Block sync calls
env_->delay_sstable_sync_.store(true, std::memory_order_release);
ASSERT_OK(Put(1, "k1", std::string(100000, 'x'))); // Fill memtable
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ("2", num);
ASSERT_OK(Put(1, "k2", std::string(100000, 'y'))); // Trigger compaction
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ("1", num);
ASSERT_EQ("v1", Get(1, "foo"));
// Release sync calls
env_->delay_sstable_sync_.store(false, std::memory_order_release);
ASSERT_OK(db_->DisableFileDeletions());
ASSERT_TRUE(
dbfull()->GetProperty("rocksdb.is-file-deletions-enabled", &num));
ASSERT_EQ("0", num);
ASSERT_OK(db_->DisableFileDeletions());
ASSERT_TRUE(
dbfull()->GetProperty("rocksdb.is-file-deletions-enabled", &num));
ASSERT_EQ("0", num);
ASSERT_OK(db_->DisableFileDeletions());
ASSERT_TRUE(
dbfull()->GetProperty("rocksdb.is-file-deletions-enabled", &num));
ASSERT_EQ("0", num);
ASSERT_OK(db_->EnableFileDeletions(false));
ASSERT_TRUE(
dbfull()->GetProperty("rocksdb.is-file-deletions-enabled", &num));
ASSERT_EQ("0", num);
ASSERT_OK(db_->EnableFileDeletions());
ASSERT_TRUE(
dbfull()->GetProperty("rocksdb.is-file-deletions-enabled", &num));
ASSERT_EQ("1", num);
} while (ChangeOptions());
}
TEST_F(DBPropertiesTest, CurrentVersionNumber) {
uint64_t v1, v2, v3;
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.current-super-version-number", &v1));
ASSERT_OK(Put("12345678", ""));
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.current-super-version-number", &v2));
ASSERT_OK(Flush());
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.current-super-version-number", &v3));
ASSERT_EQ(v1, v2);
ASSERT_GT(v3, v2);
}
TEST_F(DBPropertiesTest, GetAggregatedIntPropertyTest) {
const int kKeySize = 100;
const int kValueSize = 500;
const int kKeyNum = 100;
Options options;
options.env = env_;
options.create_if_missing = true;
options.write_buffer_size = (kKeySize + kValueSize) * kKeyNum / 10;
// Make them never flush
options.min_write_buffer_number_to_merge = 1000;
options.max_write_buffer_number = 1000;
options = CurrentOptions(options);
CreateAndReopenWithCF({"one", "two", "three", "four"}, options);
Random rnd(301);
for (auto* handle : handles_) {
for (int i = 0; i < kKeyNum; ++i) {
ASSERT_OK(db_->Put(WriteOptions(), handle, rnd.RandomString(kKeySize),
rnd.RandomString(kValueSize)));
}
}
uint64_t manual_sum = 0;
uint64_t api_sum = 0;
uint64_t value = 0;
for (auto* handle : handles_) {
ASSERT_TRUE(
db_->GetIntProperty(handle, DB::Properties::kSizeAllMemTables, &value));
manual_sum += value;
}
ASSERT_TRUE(db_->GetAggregatedIntProperty(DB::Properties::kSizeAllMemTables,
&api_sum));
ASSERT_GT(manual_sum, 0);
ASSERT_EQ(manual_sum, api_sum);
ASSERT_FALSE(db_->GetAggregatedIntProperty(DB::Properties::kDBStats, &value));
uint64_t before_flush_trm;
uint64_t after_flush_trm;
for (auto* handle : handles_) {
ASSERT_TRUE(db_->GetAggregatedIntProperty(
DB::Properties::kEstimateTableReadersMem, &before_flush_trm));
// Issue flush and expect larger memory usage of table readers.
ASSERT_OK(db_->Flush(FlushOptions(), handle));
ASSERT_TRUE(db_->GetAggregatedIntProperty(
DB::Properties::kEstimateTableReadersMem, &after_flush_trm));
ASSERT_GT(after_flush_trm, before_flush_trm);
}
}
namespace {
void ResetTableProperties(TableProperties* tp) {
tp->data_size = 0;
tp->index_size = 0;
tp->filter_size = 0;
tp->raw_key_size = 0;
tp->raw_value_size = 0;
tp->num_data_blocks = 0;
tp->num_entries = 0;
tp->num_deletions = 0;
tp->num_merge_operands = 0;
tp->num_range_deletions = 0;
}
void ParseTablePropertiesString(std::string tp_string, TableProperties* tp) {
double dummy_double;
std::replace(tp_string.begin(), tp_string.end(), ';', ' ');
std::replace(tp_string.begin(), tp_string.end(), '=', ' ');
ResetTableProperties(tp);
sscanf(tp_string.c_str(),
"# data blocks %" SCNu64 " # entries %" SCNu64 " # deletions %" SCNu64
" # merge operands %" SCNu64 " # range deletions %" SCNu64
" raw key size %" SCNu64
" raw average key size %lf "
" raw value size %" SCNu64
" raw average value size %lf "
" data block size %" SCNu64 " index block size (user-key? %" SCNu64
", delta-value? %" SCNu64 ") %" SCNu64 " filter block size %" SCNu64,
&tp->num_data_blocks, &tp->num_entries, &tp->num_deletions,
&tp->num_merge_operands, &tp->num_range_deletions, &tp->raw_key_size,
&dummy_double, &tp->raw_value_size, &dummy_double, &tp->data_size,
&tp->index_key_is_user_key, &tp->index_value_is_delta_encoded,
&tp->index_size, &tp->filter_size);
}
void VerifySimilar(uint64_t a, uint64_t b, double bias) {
ASSERT_EQ(a == 0U, b == 0U);
if (a == 0) {
return;
}
double dbl_a = static_cast<double>(a);
double dbl_b = static_cast<double>(b);
if (dbl_a > dbl_b) {
ASSERT_LT(static_cast<double>(dbl_a - dbl_b) / (dbl_a + dbl_b), bias);
} else {
ASSERT_LT(static_cast<double>(dbl_b - dbl_a) / (dbl_a + dbl_b), bias);
}
}
void VerifyTableProperties(
const TableProperties& base_tp, const TableProperties& new_tp,
double filter_size_bias = CACHE_LINE_SIZE >= 256 ? 0.15 : 0.1,
double index_size_bias = 0.1, double data_size_bias = 0.1,
double num_data_blocks_bias = 0.05) {
VerifySimilar(base_tp.data_size, new_tp.data_size, data_size_bias);
VerifySimilar(base_tp.index_size, new_tp.index_size, index_size_bias);
VerifySimilar(base_tp.filter_size, new_tp.filter_size, filter_size_bias);
VerifySimilar(base_tp.num_data_blocks, new_tp.num_data_blocks,
num_data_blocks_bias);
ASSERT_EQ(base_tp.raw_key_size, new_tp.raw_key_size);
ASSERT_EQ(base_tp.raw_value_size, new_tp.raw_value_size);
ASSERT_EQ(base_tp.num_entries, new_tp.num_entries);
ASSERT_EQ(base_tp.num_deletions, new_tp.num_deletions);
ASSERT_EQ(base_tp.num_range_deletions, new_tp.num_range_deletions);
// Merge operands may become Puts, so we only have an upper bound the exact
// number of merge operands.
ASSERT_GE(base_tp.num_merge_operands, new_tp.num_merge_operands);
}
void GetExpectedTableProperties(
TableProperties* expected_tp, const int kKeySize, const int kValueSize,
const int kPutsPerTable, const int kDeletionsPerTable,
const int kMergeOperandsPerTable, const int kRangeDeletionsPerTable,
const int kTableCount, const int kBloomBitsPerKey, const size_t kBlockSize,
const bool index_key_is_user_key, const bool value_delta_encoding) {
const int kKeysPerTable =
kPutsPerTable + kDeletionsPerTable + kMergeOperandsPerTable;
const int kPutCount = kTableCount * kPutsPerTable;
const int kDeletionCount = kTableCount * kDeletionsPerTable;
const int kMergeCount = kTableCount * kMergeOperandsPerTable;
const int kRangeDeletionCount = kTableCount * kRangeDeletionsPerTable;
const int kKeyCount = kPutCount + kDeletionCount + kMergeCount + kRangeDeletionCount;
const int kAvgSuccessorSize = kKeySize / 5;
const int kEncodingSavePerKey = kKeySize / 4;
expected_tp->raw_key_size = kKeyCount * (kKeySize + 8);
expected_tp->raw_value_size =
(kPutCount + kMergeCount + kRangeDeletionCount) * kValueSize;
expected_tp->num_entries = kKeyCount;
expected_tp->num_deletions = kDeletionCount + kRangeDeletionCount;
expected_tp->num_merge_operands = kMergeCount;
expected_tp->num_range_deletions = kRangeDeletionCount;
expected_tp->num_data_blocks =
kTableCount * (kKeysPerTable * (kKeySize - kEncodingSavePerKey + kValueSize)) /
kBlockSize;
expected_tp->data_size =
kTableCount * (kKeysPerTable * (kKeySize + 8 + kValueSize));
expected_tp->index_size =
expected_tp->num_data_blocks *
(kAvgSuccessorSize + (index_key_is_user_key ? 0 : 8) -
// discount 1 byte as value size is not encoded in value delta encoding
(value_delta_encoding ? 1 : 0));
expected_tp->filter_size =
kTableCount * ((kKeysPerTable * kBloomBitsPerKey + 7) / 8 +
/*average-ish overhead*/ CACHE_LINE_SIZE / 2);
}
} // anonymous namespace
TEST_F(DBPropertiesTest, ValidatePropertyInfo) {
for (const auto& ppt_name_and_info : InternalStats::ppt_name_to_info) {
// If C++ gets a std::string_literal, this would be better to check at
// compile-time using static_assert.
ASSERT_TRUE(ppt_name_and_info.first.empty() ||
!isdigit(ppt_name_and_info.first.back()));
int count = 0;
count += (ppt_name_and_info.second.handle_string == nullptr) ? 0 : 1;
count += (ppt_name_and_info.second.handle_int == nullptr) ? 0 : 1;
count += (ppt_name_and_info.second.handle_string_dbimpl == nullptr) ? 0 : 1;
ASSERT_TRUE(count == 1);
}
}
TEST_F(DBPropertiesTest, ValidateSampleNumber) {
// When "max_open_files" is -1, we read all the files for
// "rocksdb.estimate-num-keys" computation, which is the ground truth.
// Otherwise, we sample 20 newest files to make an estimation.
// Formula: lastest_20_files_active_key_ratio * total_files
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.level0_stop_writes_trigger = 1000;
DestroyAndReopen(options);
int key = 0;
for (int files = 20; files >= 10; files -= 10) {
for (int i = 0; i < files; i++) {
int rows = files / 10;
for (int j = 0; j < rows; j++) {
ASSERT_OK(db_->Put(WriteOptions(), std::to_string(++key), "foo"));
}
ASSERT_OK(db_->Flush(FlushOptions()));
}
}
std::string num;
Reopen(options);
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.estimate-num-keys", &num));
ASSERT_EQ("45", num);
options.max_open_files = -1;
Reopen(options);
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.estimate-num-keys", &num));
ASSERT_EQ("50", num);
}
TEST_F(DBPropertiesTest, AggregatedTableProperties) {
for (int kTableCount = 40; kTableCount <= 100; kTableCount += 30) {
const int kDeletionsPerTable = 5;
const int kMergeOperandsPerTable = 15;
const int kRangeDeletionsPerTable = 5;
const int kPutsPerTable = 100;
const int kKeySize = 80;
const int kValueSize = 200;
const int kBloomBitsPerKey = 20;
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 8;
options.compression = kNoCompression;
options.create_if_missing = true;
options.preserve_deletes = true;
options.merge_operator.reset(new TestPutOperator());
BlockBasedTableOptions table_options;
table_options.filter_policy.reset(
NewBloomFilterPolicy(kBloomBitsPerKey, false));
table_options.block_size = 1024;
options.table_factory.reset(new BlockBasedTableFactory(table_options));
DestroyAndReopen(options);
// Hold open a snapshot to prevent range tombstones from being compacted
// away.
ManagedSnapshot snapshot(db_);
Random rnd(5632);
for (int table = 1; table <= kTableCount; ++table) {
for (int i = 0; i < kPutsPerTable; ++i) {
ASSERT_OK(db_->Put(WriteOptions(), rnd.RandomString(kKeySize),
rnd.RandomString(kValueSize)));
}
for (int i = 0; i < kDeletionsPerTable; i++) {
ASSERT_OK(db_->Delete(WriteOptions(), rnd.RandomString(kKeySize)));
}
for (int i = 0; i < kMergeOperandsPerTable; i++) {
ASSERT_OK(db_->Merge(WriteOptions(), rnd.RandomString(kKeySize),
rnd.RandomString(kValueSize)));
}
for (int i = 0; i < kRangeDeletionsPerTable; i++) {
std::string start = rnd.RandomString(kKeySize);
std::string end = start;
end.resize(kValueSize);
ASSERT_OK(db_->DeleteRange(WriteOptions(), db_->DefaultColumnFamily(),
start, end));
}
ASSERT_OK(db_->Flush(FlushOptions()));
}
std::string property;
db_->GetProperty(DB::Properties::kAggregatedTableProperties, &property);
TableProperties output_tp;
ParseTablePropertiesString(property, &output_tp);
bool index_key_is_user_key = output_tp.index_key_is_user_key > 0;
bool value_is_delta_encoded = output_tp.index_value_is_delta_encoded > 0;
TableProperties expected_tp;
GetExpectedTableProperties(
&expected_tp, kKeySize, kValueSize, kPutsPerTable, kDeletionsPerTable,
kMergeOperandsPerTable, kRangeDeletionsPerTable, kTableCount,
kBloomBitsPerKey, table_options.block_size, index_key_is_user_key,
value_is_delta_encoded);
VerifyTableProperties(expected_tp, output_tp);
}
}
TEST_F(DBPropertiesTest, ReadLatencyHistogramByLevel) {
Options options = CurrentOptions();
options.write_buffer_size = 110 << 10;
options.level0_file_num_compaction_trigger = 6;
options.num_levels = 4;
options.compression = kNoCompression;
options.max_bytes_for_level_base = 4500 << 10;
options.target_file_size_base = 98 << 10;
options.max_write_buffer_number = 2;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options.max_open_files = 11; // Make sure no proloading of table readers
// RocksDB sanitize max open files to at least 20. Modify it back.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"SanitizeOptions::AfterChangeMaxOpenFiles", [&](void* arg) {
int* max_open_files = static_cast<int*>(arg);
*max_open_files = 11;
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
BlockBasedTableOptions table_options;
table_options.no_block_cache = true;
CreateAndReopenWithCF({"pikachu"}, options);
int key_index = 0;
Random rnd(301);
for (int num = 0; num < 8; num++) {
ASSERT_OK(Put("foo", "bar"));
GenerateNewFile(&rnd, &key_index);
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
std::string prop;
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.dbstats", &prop));
// Get() after flushes, See latency histogram tracked.
for (int key = 0; key < key_index; key++) {
Get(Key(key));
}
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.cfstats", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_NE(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// Reopen and issue Get(). See thee latency tracked
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_OK(dbfull()->TEST_WaitForCompact());
for (int key = 0; key < key_index; key++) {
Get(Key(key));
}
// Test for getting immutable_db_options_.statistics
ASSERT_TRUE(dbfull()->GetProperty(dbfull()->DefaultColumnFamily(),
"rocksdb.options-statistics", &prop));
ASSERT_NE(std::string::npos, prop.find("rocksdb.block.cache.miss"));
ASSERT_EQ(std::string::npos, prop.find("rocksdb.db.f.micros"));
ASSERT_TRUE(dbfull()->GetProperty(dbfull()->DefaultColumnFamily(),
"rocksdb.cf-file-histogram", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_NE(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// Reopen and issue iterating. See thee latency tracked
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.cf-file-histogram", &prop));
ASSERT_EQ(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
for (iter->Seek(Key(0)); iter->Valid(); iter->Next()) {
}
ASSERT_OK(iter->status());
}
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.cf-file-histogram", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_NE(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// CF 1 should show no histogram.
ASSERT_TRUE(
dbfull()->GetProperty(handles_[1], "rocksdb.cf-file-histogram", &prop));
ASSERT_EQ(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// put something and read it back , CF 1 should show histogram.
ASSERT_OK(Put(1, "foo", "bar"));
ASSERT_OK(Flush(1));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("bar", Get(1, "foo"));
ASSERT_TRUE(
dbfull()->GetProperty(handles_[1], "rocksdb.cf-file-histogram", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// options.max_open_files preloads table readers.
options.max_open_files = -1;
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_TRUE(dbfull()->GetProperty(dbfull()->DefaultColumnFamily(),
"rocksdb.cf-file-histogram", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_NE(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
for (int key = 0; key < key_index; key++) {
Get(Key(key));
}
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.cfstats", &prop));
ASSERT_NE(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_NE(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
// Clear internal stats
ASSERT_OK(dbfull()->ResetStats());
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.cfstats", &prop));
ASSERT_EQ(std::string::npos, prop.find("** Level 0 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 1 read latency histogram"));
ASSERT_EQ(std::string::npos, prop.find("** Level 2 read latency histogram"));
}
TEST_F(DBPropertiesTest, AggregatedTablePropertiesAtLevel) {
const int kTableCount = 100;
const int kDeletionsPerTable = 2;
const int kMergeOperandsPerTable = 2;
const int kRangeDeletionsPerTable = 2;
const int kPutsPerTable = 10;
const int kKeySize = 50;
const int kValueSize = 400;
const int kMaxLevel = 7;
const int kBloomBitsPerKey = 20;
Random rnd(301);
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 8;
options.compression = kNoCompression;
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
options.target_file_size_base = 8192;
options.max_bytes_for_level_base = 10000;
options.max_bytes_for_level_multiplier = 2;
// This ensures there no compaction happening when we call GetProperty().
options.disable_auto_compactions = true;
options.preserve_deletes = true;
options.merge_operator.reset(new TestPutOperator());
BlockBasedTableOptions table_options;
table_options.filter_policy.reset(
NewBloomFilterPolicy(kBloomBitsPerKey, false));
table_options.block_size = 1024;
options.table_factory.reset(new BlockBasedTableFactory(table_options));
DestroyAndReopen(options);
// Hold open a snapshot to prevent range tombstones from being compacted away.
ManagedSnapshot snapshot(db_);
std::string level_tp_strings[kMaxLevel];
std::string tp_string;
TableProperties level_tps[kMaxLevel];
TableProperties tp, sum_tp, expected_tp;
for (int table = 1; table <= kTableCount; ++table) {
for (int i = 0; i < kPutsPerTable; ++i) {
ASSERT_OK(db_->Put(WriteOptions(), rnd.RandomString(kKeySize),
rnd.RandomString(kValueSize)));
}
for (int i = 0; i < kDeletionsPerTable; i++) {
ASSERT_OK(db_->Delete(WriteOptions(), rnd.RandomString(kKeySize)));
}
for (int i = 0; i < kMergeOperandsPerTable; i++) {
ASSERT_OK(db_->Merge(WriteOptions(), rnd.RandomString(kKeySize),
rnd.RandomString(kValueSize)));
}
for (int i = 0; i < kRangeDeletionsPerTable; i++) {
std::string start = rnd.RandomString(kKeySize);
std::string end = start;
end.resize(kValueSize);
ASSERT_OK(db_->DeleteRange(WriteOptions(), db_->DefaultColumnFamily(),
start, end));
}
ASSERT_OK(db_->Flush(FlushOptions()));
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ResetTableProperties(&sum_tp);
for (int level = 0; level < kMaxLevel; ++level) {
db_->GetProperty(
DB::Properties::kAggregatedTablePropertiesAtLevel + ToString(level),
&level_tp_strings[level]);
ParseTablePropertiesString(level_tp_strings[level], &level_tps[level]);
sum_tp.data_size += level_tps[level].data_size;
sum_tp.index_size += level_tps[level].index_size;
sum_tp.filter_size += level_tps[level].filter_size;
sum_tp.raw_key_size += level_tps[level].raw_key_size;
sum_tp.raw_value_size += level_tps[level].raw_value_size;
sum_tp.num_data_blocks += level_tps[level].num_data_blocks;
sum_tp.num_entries += level_tps[level].num_entries;
sum_tp.num_deletions += level_tps[level].num_deletions;
sum_tp.num_merge_operands += level_tps[level].num_merge_operands;
sum_tp.num_range_deletions += level_tps[level].num_range_deletions;
}
db_->GetProperty(DB::Properties::kAggregatedTableProperties, &tp_string);
ParseTablePropertiesString(tp_string, &tp);
bool index_key_is_user_key = tp.index_key_is_user_key > 0;
bool value_is_delta_encoded = tp.index_value_is_delta_encoded > 0;
ASSERT_EQ(sum_tp.data_size, tp.data_size);
ASSERT_EQ(sum_tp.index_size, tp.index_size);
ASSERT_EQ(sum_tp.filter_size, tp.filter_size);
ASSERT_EQ(sum_tp.raw_key_size, tp.raw_key_size);
ASSERT_EQ(sum_tp.raw_value_size, tp.raw_value_size);
ASSERT_EQ(sum_tp.num_data_blocks, tp.num_data_blocks);
ASSERT_EQ(sum_tp.num_entries, tp.num_entries);
ASSERT_EQ(sum_tp.num_deletions, tp.num_deletions);
ASSERT_EQ(sum_tp.num_merge_operands, tp.num_merge_operands);
ASSERT_EQ(sum_tp.num_range_deletions, tp.num_range_deletions);
if (table > 3) {
GetExpectedTableProperties(
&expected_tp, kKeySize, kValueSize, kPutsPerTable, kDeletionsPerTable,
kMergeOperandsPerTable, kRangeDeletionsPerTable, table,
kBloomBitsPerKey, table_options.block_size, index_key_is_user_key,
value_is_delta_encoded);
// Gives larger bias here as index block size, filter block size,
// and data block size become much harder to estimate in this test.
VerifyTableProperties(expected_tp, tp, 0.5, 0.4, 0.4, 0.25);
}
}
}
TEST_F(DBPropertiesTest, NumImmutableMemTable) {
do {
Options options = CurrentOptions();
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
options.max_write_buffer_number = 4;
options.min_write_buffer_number_to_merge = 3;
options.write_buffer_size = 1000000;
Refactor trimming logic for immutable memtables (#5022) Summary: MyRocks currently sets `max_write_buffer_number_to_maintain` in order to maintain enough history for transaction conflict checking. The effectiveness of this approach depends on the size of memtables. When memtables are small, it may not keep enough history; when memtables are large, this may consume too much memory. We are proposing a new way to configure memtable list history: by limiting the memory usage of immutable memtables. The new option is `max_write_buffer_size_to_maintain` and it will take precedence over the old `max_write_buffer_number_to_maintain` if they are both set to non-zero values. The new option accounts for the total memory usage of flushed immutable memtables and mutable memtable. When the total usage exceeds the limit, RocksDB may start dropping immutable memtables (which is also called trimming history), starting from the oldest one. The semantics of the old option actually works both as an upper bound and lower bound. History trimming will start if number of immutable memtables exceeds the limit, but it will never go below (limit-1) due to history trimming. In order the mimic the behavior with the new option, history trimming will stop if dropping the next immutable memtable causes the total memory usage go below the size limit. For example, assuming the size limit is set to 64MB, and there are 3 immutable memtables with sizes of 20, 30, 30. Although the total memory usage is 80MB > 64MB, dropping the oldest memtable will reduce the memory usage to 60MB < 64MB, so in this case no memtable will be dropped. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5022 Differential Revision: D14394062 Pulled By: miasantreble fbshipit-source-id: 60457a509c6af89d0993f988c9b5c2aa9e45f5c5
5 years ago
options.max_write_buffer_size_to_maintain =
5 * static_cast<int64_t>(options.write_buffer_size);
CreateAndReopenWithCF({"pikachu"}, options);
std::string big_value(1000000 * 2, 'x');
std::string num;
uint64_t value;
SetPerfLevel(kEnableTime);
ASSERT_TRUE(GetPerfLevel() == kEnableTime);
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k1", big_value));
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], DB::Properties::kNumImmutableMemTableFlushed, &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ(num, "1");
get_perf_context()->Reset();
Get(1, "k1");
ASSERT_EQ(1, static_cast<int>(get_perf_context()->get_from_memtable_count));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k2", big_value));
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "1");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ(num, "1");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-imm-mem-tables", &num));
ASSERT_EQ(num, "1");
get_perf_context()->Reset();
Get(1, "k1");
ASSERT_EQ(2, static_cast<int>(get_perf_context()->get_from_memtable_count));
get_perf_context()->Reset();
Get(1, "k2");
ASSERT_EQ(1, static_cast<int>(get_perf_context()->get_from_memtable_count));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k3", big_value));
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.cur-size-active-mem-table", &num));
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "2");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &num));
ASSERT_EQ(num, "1");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.num-entries-imm-mem-tables", &num));
ASSERT_EQ(num, "2");
get_perf_context()->Reset();
Get(1, "k2");
ASSERT_EQ(2, static_cast<int>(get_perf_context()->get_from_memtable_count));
get_perf_context()->Reset();
Get(1, "k3");
ASSERT_EQ(1, static_cast<int>(get_perf_context()->get_from_memtable_count));
get_perf_context()->Reset();
Get(1, "k1");
ASSERT_EQ(3, static_cast<int>(get_perf_context()->get_from_memtable_count));
ASSERT_OK(Flush(1));
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], DB::Properties::kNumImmutableMemTableFlushed, &num));
ASSERT_EQ(num, "3");
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.cur-size-active-mem-table", &value));
// "192" is the size of the metadata of two empty skiplists, this would
// break if we change the default skiplist implementation
ASSERT_GE(value, 192);
uint64_t int_num;
uint64_t base_total_size;
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.estimate-num-keys", &base_total_size));
ASSERT_OK(dbfull()->Delete(writeOpt, handles_[1], "k2"));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k3", ""));
ASSERT_OK(dbfull()->Delete(writeOpt, handles_[1], "k3"));
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.num-deletes-active-mem-table", &int_num));
ASSERT_EQ(int_num, 2U);
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.num-entries-active-mem-table", &int_num));
ASSERT_EQ(int_num, 3U);
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k2", big_value));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k2", big_value));
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.num-entries-imm-mem-tables", &int_num));
ASSERT_EQ(int_num, 4U);
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.num-deletes-imm-mem-tables", &int_num));
ASSERT_EQ(int_num, 2U);
ASSERT_TRUE(dbfull()->GetIntProperty(
handles_[1], "rocksdb.estimate-num-keys", &int_num));
ASSERT_EQ(int_num, base_total_size + 1);
SetPerfLevel(kDisable);
ASSERT_TRUE(GetPerfLevel() == kDisable);
} while (ChangeCompactOptions());
}
// TODO(techdept) : Disabled flaky test #12863555
TEST_F(DBPropertiesTest, DISABLED_GetProperty) {
// Set sizes to both background thread pool to be 1 and block them.
env_->SetBackgroundThreads(1, Env::HIGH);
env_->SetBackgroundThreads(1, Env::LOW);
test::SleepingBackgroundTask sleeping_task_low;
env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask, &sleeping_task_low,
Env::Priority::LOW);
test::SleepingBackgroundTask sleeping_task_high;
env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask,
&sleeping_task_high, Env::Priority::HIGH);
Options options = CurrentOptions();
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
options.compaction_style = kCompactionStyleUniversal;
options.level0_file_num_compaction_trigger = 1;
options.compaction_options_universal.size_ratio = 50;
options.max_background_compactions = 1;
options.max_background_flushes = 1;
options.max_write_buffer_number = 10;
options.min_write_buffer_number_to_merge = 1;
Refactor trimming logic for immutable memtables (#5022) Summary: MyRocks currently sets `max_write_buffer_number_to_maintain` in order to maintain enough history for transaction conflict checking. The effectiveness of this approach depends on the size of memtables. When memtables are small, it may not keep enough history; when memtables are large, this may consume too much memory. We are proposing a new way to configure memtable list history: by limiting the memory usage of immutable memtables. The new option is `max_write_buffer_size_to_maintain` and it will take precedence over the old `max_write_buffer_number_to_maintain` if they are both set to non-zero values. The new option accounts for the total memory usage of flushed immutable memtables and mutable memtable. When the total usage exceeds the limit, RocksDB may start dropping immutable memtables (which is also called trimming history), starting from the oldest one. The semantics of the old option actually works both as an upper bound and lower bound. History trimming will start if number of immutable memtables exceeds the limit, but it will never go below (limit-1) due to history trimming. In order the mimic the behavior with the new option, history trimming will stop if dropping the next immutable memtable causes the total memory usage go below the size limit. For example, assuming the size limit is set to 64MB, and there are 3 immutable memtables with sizes of 20, 30, 30. Although the total memory usage is 80MB > 64MB, dropping the oldest memtable will reduce the memory usage to 60MB < 64MB, so in this case no memtable will be dropped. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5022 Differential Revision: D14394062 Pulled By: miasantreble fbshipit-source-id: 60457a509c6af89d0993f988c9b5c2aa9e45f5c5
5 years ago
options.max_write_buffer_size_to_maintain = 0;
options.write_buffer_size = 1000000;
Reopen(options);
std::string big_value(1000000 * 2, 'x');
std::string num;
uint64_t int_num;
SetPerfLevel(kEnableTime);
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
ASSERT_EQ(int_num, 0U);
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-live-data-size", &int_num));
ASSERT_EQ(int_num, 0U);
ASSERT_OK(dbfull()->Put(writeOpt, "k1", big_value));
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.mem-table-flush-pending", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.compaction-pending", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.estimate-num-keys", &num));
ASSERT_EQ(num, "1");
get_perf_context()->Reset();
ASSERT_OK(dbfull()->Put(writeOpt, "k2", big_value));
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "1");
ASSERT_OK(dbfull()->Delete(writeOpt, "k-non-existing"));
ASSERT_OK(dbfull()->Put(writeOpt, "k3", big_value));
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "2");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.mem-table-flush-pending", &num));
ASSERT_EQ(num, "1");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.compaction-pending", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.estimate-num-keys", &num));
ASSERT_EQ(num, "2");
// Verify the same set of properties through GetIntProperty
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-immutable-mem-table", &int_num));
ASSERT_EQ(int_num, 2U);
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.mem-table-flush-pending", &int_num));
ASSERT_EQ(int_num, 1U);
ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.compaction-pending", &int_num));
ASSERT_EQ(int_num, 0U);
ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.estimate-num-keys", &int_num));
ASSERT_EQ(int_num, 2U);
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
ASSERT_EQ(int_num, 0U);
sleeping_task_high.WakeUp();
sleeping_task_high.WaitUntilDone();
dbfull()->TEST_WaitForFlushMemTable();
ASSERT_OK(dbfull()->Put(writeOpt, "k4", big_value));
ASSERT_OK(dbfull()->Put(writeOpt, "k5", big_value));
dbfull()->TEST_WaitForFlushMemTable();
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.mem-table-flush-pending", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.compaction-pending", &num));
ASSERT_EQ(num, "1");
ASSERT_TRUE(dbfull()->GetProperty("rocksdb.estimate-num-keys", &num));
ASSERT_EQ(num, "4");
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
ASSERT_GT(int_num, 0U);
sleeping_task_low.WakeUp();
sleeping_task_low.WaitUntilDone();
// Wait for compaction to be done. This is important because otherwise RocksDB
// might schedule a compaction when reopening the database, failing assertion
// (A) as a result.
ASSERT_OK(dbfull()->TEST_WaitForCompact());
options.max_open_files = 10;
Reopen(options);
// After reopening, no table reader is loaded, so no memory for table readers
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
ASSERT_EQ(int_num, 0U); // (A)
ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.estimate-num-keys", &int_num));
ASSERT_GT(int_num, 0U);
// After reading a key, at least one table reader is loaded.
Get("k5");
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.estimate-table-readers-mem", &int_num));
ASSERT_GT(int_num, 0U);
// Test rocksdb.num-live-versions
{
options.level0_file_num_compaction_trigger = 20;
Reopen(options);
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-live-versions", &int_num));
ASSERT_EQ(int_num, 1U);
// Use an iterator to hold current version
std::unique_ptr<Iterator> iter1(dbfull()->NewIterator(ReadOptions()));
ASSERT_OK(dbfull()->Put(writeOpt, "k6", big_value));
ASSERT_OK(Flush());
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-live-versions", &int_num));
ASSERT_EQ(int_num, 2U);
// Use an iterator to hold current version
std::unique_ptr<Iterator> iter2(dbfull()->NewIterator(ReadOptions()));
ASSERT_OK(dbfull()->Put(writeOpt, "k7", big_value));
ASSERT_OK(Flush());
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-live-versions", &int_num));
ASSERT_EQ(int_num, 3U);
iter2.reset();
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-live-versions", &int_num));
ASSERT_EQ(int_num, 2U);
iter1.reset();
ASSERT_TRUE(
dbfull()->GetIntProperty("rocksdb.num-live-versions", &int_num));
ASSERT_EQ(int_num, 1U);
}
}
TEST_F(DBPropertiesTest, ApproximateMemoryUsage) {
const int kNumRounds = 10;
// TODO(noetzli) kFlushesPerRound does not really correlate with how many
// flushes happen.
const int kFlushesPerRound = 10;
const int kWritesPerFlush = 10;
const int kKeySize = 100;
const int kValueSize = 1000;
Options options;
options.write_buffer_size = 1000; // small write buffer
options.min_write_buffer_number_to_merge = 4;
options.compression = kNoCompression;
options.create_if_missing = true;
options = CurrentOptions(options);
DestroyAndReopen(options);
Random rnd(301);
std::vector<Iterator*> iters;
uint64_t active_mem;
uint64_t unflushed_mem;
uint64_t all_mem;
uint64_t prev_all_mem;
// Phase 0. The verify the initial value of all these properties are the same
// as we have no mem-tables.
dbfull()->GetIntProperty("rocksdb.cur-size-active-mem-table", &active_mem);
dbfull()->GetIntProperty("rocksdb.cur-size-all-mem-tables", &unflushed_mem);
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
ASSERT_EQ(all_mem, active_mem);
ASSERT_EQ(all_mem, unflushed_mem);
// Phase 1. Simply issue Put() and expect "cur-size-all-mem-tables" equals to
// "size-all-mem-tables"
for (int r = 0; r < kNumRounds; ++r) {
for (int f = 0; f < kFlushesPerRound; ++f) {
for (int w = 0; w < kWritesPerFlush; ++w) {
ASSERT_OK(
Put(rnd.RandomString(kKeySize), rnd.RandomString(kValueSize)));
}
}
// Make sure that there is no flush between getting the two properties.
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
dbfull()->GetIntProperty("rocksdb.cur-size-all-mem-tables", &unflushed_mem);
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
// in no iterator case, these two number should be the same.
ASSERT_EQ(unflushed_mem, all_mem);
}
prev_all_mem = all_mem;
// Phase 2. Keep issuing Put() but also create new iterators. This time we
// expect "size-all-mem-tables" > "cur-size-all-mem-tables".
for (int r = 0; r < kNumRounds; ++r) {
iters.push_back(db_->NewIterator(ReadOptions()));
for (int f = 0; f < kFlushesPerRound; ++f) {
for (int w = 0; w < kWritesPerFlush; ++w) {
ASSERT_OK(
Put(rnd.RandomString(kKeySize), rnd.RandomString(kValueSize)));
}
}
// Force flush to prevent flush from happening between getting the
// properties or after getting the properties and before the new round.
ASSERT_OK(Flush());
// In the second round, add iterators.
dbfull()->GetIntProperty("rocksdb.cur-size-active-mem-table", &active_mem);
dbfull()->GetIntProperty("rocksdb.cur-size-all-mem-tables", &unflushed_mem);
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
ASSERT_GT(all_mem, active_mem);
ASSERT_GT(all_mem, unflushed_mem);
ASSERT_GT(all_mem, prev_all_mem);
prev_all_mem = all_mem;
}
// Phase 3. Delete iterators and expect "size-all-mem-tables" shrinks
// whenever we release an iterator.
for (auto* iter : iters) {
ASSERT_OK(iter->status());
delete iter;
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
// Expect the size shrinking
ASSERT_LT(all_mem, prev_all_mem);
prev_all_mem = all_mem;
}
// Expect all these three counters to be the same.
dbfull()->GetIntProperty("rocksdb.cur-size-active-mem-table", &active_mem);
dbfull()->GetIntProperty("rocksdb.cur-size-all-mem-tables", &unflushed_mem);
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
ASSERT_EQ(active_mem, unflushed_mem);
ASSERT_EQ(unflushed_mem, all_mem);
// Phase 5. Reopen, and expect all these three counters to be the same again.
Reopen(options);
dbfull()->GetIntProperty("rocksdb.cur-size-active-mem-table", &active_mem);
dbfull()->GetIntProperty("rocksdb.cur-size-all-mem-tables", &unflushed_mem);
dbfull()->GetIntProperty("rocksdb.size-all-mem-tables", &all_mem);
ASSERT_EQ(active_mem, unflushed_mem);
ASSERT_EQ(unflushed_mem, all_mem);
}
TEST_F(DBPropertiesTest, EstimatePendingCompBytes) {
// Set sizes to both background thread pool to be 1 and block them.
env_->SetBackgroundThreads(1, Env::HIGH);
env_->SetBackgroundThreads(1, Env::LOW);
test::SleepingBackgroundTask sleeping_task_low;
env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask, &sleeping_task_low,
Env::Priority::LOW);
Options options = CurrentOptions();
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
options.compaction_style = kCompactionStyleLevel;
options.level0_file_num_compaction_trigger = 2;
options.max_background_compactions = 1;
options.max_background_flushes = 1;
options.max_write_buffer_number = 10;
options.min_write_buffer_number_to_merge = 1;
Refactor trimming logic for immutable memtables (#5022) Summary: MyRocks currently sets `max_write_buffer_number_to_maintain` in order to maintain enough history for transaction conflict checking. The effectiveness of this approach depends on the size of memtables. When memtables are small, it may not keep enough history; when memtables are large, this may consume too much memory. We are proposing a new way to configure memtable list history: by limiting the memory usage of immutable memtables. The new option is `max_write_buffer_size_to_maintain` and it will take precedence over the old `max_write_buffer_number_to_maintain` if they are both set to non-zero values. The new option accounts for the total memory usage of flushed immutable memtables and mutable memtable. When the total usage exceeds the limit, RocksDB may start dropping immutable memtables (which is also called trimming history), starting from the oldest one. The semantics of the old option actually works both as an upper bound and lower bound. History trimming will start if number of immutable memtables exceeds the limit, but it will never go below (limit-1) due to history trimming. In order the mimic the behavior with the new option, history trimming will stop if dropping the next immutable memtable causes the total memory usage go below the size limit. For example, assuming the size limit is set to 64MB, and there are 3 immutable memtables with sizes of 20, 30, 30. Although the total memory usage is 80MB > 64MB, dropping the oldest memtable will reduce the memory usage to 60MB < 64MB, so in this case no memtable will be dropped. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5022 Differential Revision: D14394062 Pulled By: miasantreble fbshipit-source-id: 60457a509c6af89d0993f988c9b5c2aa9e45f5c5
5 years ago
options.max_write_buffer_size_to_maintain = 0;
options.write_buffer_size = 1000000;
Reopen(options);
std::string big_value(1000000 * 2, 'x');
std::string num;
uint64_t int_num;
ASSERT_OK(dbfull()->Put(writeOpt, "k1", big_value));
ASSERT_OK(Flush());
ASSERT_TRUE(dbfull()->GetIntProperty(
"rocksdb.estimate-pending-compaction-bytes", &int_num));
ASSERT_EQ(int_num, 0U);
ASSERT_OK(dbfull()->Put(writeOpt, "k2", big_value));
ASSERT_OK(Flush());
ASSERT_TRUE(dbfull()->GetIntProperty(
"rocksdb.estimate-pending-compaction-bytes", &int_num));
ASSERT_GT(int_num, 0U);
ASSERT_OK(dbfull()->Put(writeOpt, "k3", big_value));
ASSERT_OK(Flush());
ASSERT_TRUE(dbfull()->GetIntProperty(
"rocksdb.estimate-pending-compaction-bytes", &int_num));
ASSERT_GT(int_num, 0U);
sleeping_task_low.WakeUp();
sleeping_task_low.WaitUntilDone();
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_TRUE(dbfull()->GetIntProperty(
"rocksdb.estimate-pending-compaction-bytes", &int_num));
ASSERT_EQ(int_num, 0U);
}
TEST_F(DBPropertiesTest, EstimateCompressionRatio) {
if (!Snappy_Supported()) {
return;
}
const int kNumL0Files = 3;
const int kNumEntriesPerFile = 1000;
Options options = CurrentOptions();
options.compression_per_level = {kNoCompression, kSnappyCompression};
options.disable_auto_compactions = true;
options.num_levels = 2;
Reopen(options);
// compression ratio is -1.0 when no open files at level
ASSERT_EQ(CompressionRatioAtLevel(0), -1.0);
const std::string kVal(100, 'a');
for (int i = 0; i < kNumL0Files; ++i) {
for (int j = 0; j < kNumEntriesPerFile; ++j) {
// Put common data ("key") at end to prevent delta encoding from
// compressing the key effectively
std::string key = ToString(i) + ToString(j) + "key";
ASSERT_OK(dbfull()->Put(WriteOptions(), key, kVal));
}
ASSERT_OK(Flush());
}
// no compression at L0, so ratio is less than one
ASSERT_LT(CompressionRatioAtLevel(0), 1.0);
ASSERT_GT(CompressionRatioAtLevel(0), 0.0);
ASSERT_EQ(CompressionRatioAtLevel(1), -1.0);
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_EQ(CompressionRatioAtLevel(0), -1.0);
// Data at L1 should be highly compressed thanks to Snappy and redundant data
// in values (ratio is 12.846 as of 4/19/2016).
ASSERT_GT(CompressionRatioAtLevel(1), 10.0);
}
#endif // ROCKSDB_LITE
class CountingUserTblPropCollector : public TablePropertiesCollector {
public:
const char* Name() const override { return "CountingUserTblPropCollector"; }
Status Finish(UserCollectedProperties* properties) override {
std::string encoded;
PutVarint32(&encoded, count_);
*properties = UserCollectedProperties{
{"CountingUserTblPropCollector", message_}, {"Count", encoded},
};
return Status::OK();
}
Status AddUserKey(const Slice& /*user_key*/, const Slice& /*value*/,
EntryType /*type*/, SequenceNumber /*seq*/,
uint64_t /*file_size*/) override {
++count_;
return Status::OK();
}
UserCollectedProperties GetReadableProperties() const override {
return UserCollectedProperties{};
}
private:
std::string message_ = "Rocksdb";
uint32_t count_ = 0;
};
class CountingUserTblPropCollectorFactory
: public TablePropertiesCollectorFactory {
public:
explicit CountingUserTblPropCollectorFactory(
uint32_t expected_column_family_id)
: expected_column_family_id_(expected_column_family_id),
num_created_(0) {}
TablePropertiesCollector* CreateTablePropertiesCollector(
TablePropertiesCollectorFactory::Context context) override {
EXPECT_EQ(expected_column_family_id_, context.column_family_id);
num_created_++;
return new CountingUserTblPropCollector();
}
const char* Name() const override {
return "CountingUserTblPropCollectorFactory";
}
void set_expected_column_family_id(uint32_t v) {
expected_column_family_id_ = v;
}
uint32_t expected_column_family_id_;
uint32_t num_created_;
};
class CountingDeleteTabPropCollector : public TablePropertiesCollector {
public:
const char* Name() const override { return "CountingDeleteTabPropCollector"; }
Status AddUserKey(const Slice& /*user_key*/, const Slice& /*value*/,
EntryType type, SequenceNumber /*seq*/,
uint64_t /*file_size*/) override {
if (type == kEntryDelete) {
num_deletes_++;
}
return Status::OK();
}
bool NeedCompact() const override { return num_deletes_ > 10; }
UserCollectedProperties GetReadableProperties() const override {
return UserCollectedProperties{};
}
Status Finish(UserCollectedProperties* properties) override {
*properties =
UserCollectedProperties{{"num_delete", ToString(num_deletes_)}};
return Status::OK();
}
private:
uint32_t num_deletes_ = 0;
};
class CountingDeleteTabPropCollectorFactory
: public TablePropertiesCollectorFactory {
public:
TablePropertiesCollector* CreateTablePropertiesCollector(
TablePropertiesCollectorFactory::Context /*context*/) override {
return new CountingDeleteTabPropCollector();
}
const char* Name() const override {
return "CountingDeleteTabPropCollectorFactory";
}
};
#ifndef ROCKSDB_LITE
TEST_F(DBPropertiesTest, GetUserDefinedTableProperties) {
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = (1 << 30);
options.table_properties_collector_factories.resize(1);
std::shared_ptr<CountingUserTblPropCollectorFactory> collector_factory =
std::make_shared<CountingUserTblPropCollectorFactory>(0);
options.table_properties_collector_factories[0] = collector_factory;
Reopen(options);
// Create 4 tables
for (int table = 0; table < 4; ++table) {
for (int i = 0; i < 10 + table; ++i) {
ASSERT_OK(db_->Put(WriteOptions(), ToString(table * 100 + i), "val"));
}
ASSERT_OK(db_->Flush(FlushOptions()));
}
TablePropertiesCollection props;
ASSERT_OK(db_->GetPropertiesOfAllTables(&props));
ASSERT_EQ(4U, props.size());
uint32_t sum = 0;
for (const auto& item : props) {
auto& user_collected = item.second->user_collected_properties;
ASSERT_TRUE(user_collected.find("CountingUserTblPropCollector") !=
user_collected.end());
ASSERT_EQ(user_collected.at("CountingUserTblPropCollector"), "Rocksdb");
ASSERT_TRUE(user_collected.find("Count") != user_collected.end());
Slice key(user_collected.at("Count"));
uint32_t count;
ASSERT_TRUE(GetVarint32(&key, &count));
sum += count;
}
ASSERT_EQ(10u + 11u + 12u + 13u, sum);
ASSERT_GT(collector_factory->num_created_, 0U);
collector_factory->num_created_ = 0;
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_GT(collector_factory->num_created_, 0U);
}
#endif // ROCKSDB_LITE
TEST_F(DBPropertiesTest, UserDefinedTablePropertiesContext) {
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 3;
options.table_properties_collector_factories.resize(1);
std::shared_ptr<CountingUserTblPropCollectorFactory> collector_factory =
std::make_shared<CountingUserTblPropCollectorFactory>(1);
options.table_properties_collector_factories[0] = collector_factory,
CreateAndReopenWithCF({"pikachu"}, options);
// Create 2 files
for (int table = 0; table < 2; ++table) {
for (int i = 0; i < 10 + table; ++i) {
ASSERT_OK(Put(1, ToString(table * 100 + i), "val"));
}
ASSERT_OK(Flush(1));
}
ASSERT_GT(collector_factory->num_created_, 0U);
collector_factory->num_created_ = 0;
// Trigger automatic compactions.
for (int table = 0; table < 3; ++table) {
for (int i = 0; i < 10 + table; ++i) {
ASSERT_OK(Put(1, ToString(table * 100 + i), "val"));
}
ASSERT_OK(Flush(1));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
ASSERT_GT(collector_factory->num_created_, 0U);
collector_factory->num_created_ = 0;
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
ASSERT_GT(collector_factory->num_created_, 0U);
// Come back to write to default column family
collector_factory->num_created_ = 0;
collector_factory->set_expected_column_family_id(0); // default CF
// Create 4 tables in default column family
for (int table = 0; table < 2; ++table) {
for (int i = 0; i < 10 + table; ++i) {
ASSERT_OK(Put(ToString(table * 100 + i), "val"));
}
ASSERT_OK(Flush());
}
ASSERT_GT(collector_factory->num_created_, 0U);
collector_factory->num_created_ = 0;
// Trigger automatic compactions.
for (int table = 0; table < 3; ++table) {
for (int i = 0; i < 10 + table; ++i) {
ASSERT_OK(Put(ToString(table * 100 + i), "val"));
}
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
ASSERT_GT(collector_factory->num_created_, 0U);
collector_factory->num_created_ = 0;
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_GT(collector_factory->num_created_, 0U);
}
#ifndef ROCKSDB_LITE
TEST_F(DBPropertiesTest, TablePropertiesNeedCompactTest) {
Random rnd(301);
Options options;
options.create_if_missing = true;
options.write_buffer_size = 4096;
options.max_write_buffer_number = 8;
options.level0_file_num_compaction_trigger = 2;
options.level0_slowdown_writes_trigger = 2;
options.level0_stop_writes_trigger = 4;
options.target_file_size_base = 2048;
options.max_bytes_for_level_base = 10240;
options.max_bytes_for_level_multiplier = 4;
options.soft_pending_compaction_bytes_limit = 1024 * 1024;
options.num_levels = 8;
options.env = env_;
std::shared_ptr<TablePropertiesCollectorFactory> collector_factory =
std::make_shared<CountingDeleteTabPropCollectorFactory>();
options.table_properties_collector_factories.resize(1);
options.table_properties_collector_factories[0] = collector_factory;
DestroyAndReopen(options);
const int kMaxKey = 1000;
for (int i = 0; i < kMaxKey; i++) {
ASSERT_OK(Put(Key(i), rnd.RandomString(102)));
ASSERT_OK(Put(Key(kMaxKey + i), rnd.RandomString(102)));
}
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
if (NumTableFilesAtLevel(0) == 1) {
// Clear Level 0 so that when later flush a file with deletions,
// we don't trigger an organic compaction.
ASSERT_OK(Put(Key(0), ""));
ASSERT_OK(Put(Key(kMaxKey * 2), ""));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
ASSERT_EQ(NumTableFilesAtLevel(0), 0);
{
int c = 0;
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->Seek(Key(kMaxKey - 100));
while (iter->Valid() && iter->key().compare(Key(kMaxKey + 100)) < 0) {
iter->Next();
++c;
}
ASSERT_OK(iter->status());
ASSERT_EQ(c, 200);
}
ASSERT_OK(Delete(Key(0)));
for (int i = kMaxKey - 100; i < kMaxKey + 100; i++) {
ASSERT_OK(Delete(Key(i)));
}
ASSERT_OK(Delete(Key(kMaxKey * 2)));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
{
SetPerfLevel(kEnableCount);
get_perf_context()->Reset();
int c = 0;
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->Seek(Key(kMaxKey - 100));
while (iter->Valid() && iter->key().compare(Key(kMaxKey + 100)) < 0) {
iter->Next();
}
ASSERT_OK(iter->status());
ASSERT_EQ(c, 0);
ASSERT_LT(get_perf_context()->internal_delete_skipped_count, 30u);
ASSERT_LT(get_perf_context()->internal_key_skipped_count, 30u);
SetPerfLevel(kDisable);
}
}
TEST_F(DBPropertiesTest, NeedCompactHintPersistentTest) {
Random rnd(301);
Options options;
options.create_if_missing = true;
options.max_write_buffer_number = 8;
options.level0_file_num_compaction_trigger = 10;
options.level0_slowdown_writes_trigger = 10;
options.level0_stop_writes_trigger = 10;
options.disable_auto_compactions = true;
options.env = env_;
std::shared_ptr<TablePropertiesCollectorFactory> collector_factory =
std::make_shared<CountingDeleteTabPropCollectorFactory>();
options.table_properties_collector_factories.resize(1);
options.table_properties_collector_factories[0] = collector_factory;
DestroyAndReopen(options);
const int kMaxKey = 100;
for (int i = 0; i < kMaxKey; i++) {
ASSERT_OK(Put(Key(i), ""));
}
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
for (int i = 1; i < kMaxKey - 1; i++) {
ASSERT_OK(Delete(Key(i)));
}
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
ASSERT_EQ(NumTableFilesAtLevel(0), 2);
// Restart the DB. Although number of files didn't reach
// options.level0_file_num_compaction_trigger, compaction should
// still be triggered because of the need-compaction hint.
options.disable_auto_compactions = false;
Reopen(options);
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ(NumTableFilesAtLevel(0), 0);
{
SetPerfLevel(kEnableCount);
get_perf_context()->Reset();
int c = 0;
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
for (iter->Seek(Key(0)); iter->Valid(); iter->Next()) {
c++;
}
ASSERT_OK(iter->status());
ASSERT_EQ(c, 2);
ASSERT_EQ(get_perf_context()->internal_delete_skipped_count, 0);
// We iterate every key twice. Is it a bug?
ASSERT_LE(get_perf_context()->internal_key_skipped_count, 2);
SetPerfLevel(kDisable);
}
}
TEST_F(DBPropertiesTest, EstimateNumKeysUnderflow) {
Options options;
Reopen(options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Delete("foo"));
ASSERT_OK(Delete("foo"));
uint64_t num_keys = 0;
ASSERT_TRUE(dbfull()->GetIntProperty("rocksdb.estimate-num-keys", &num_keys));
ASSERT_EQ(0, num_keys);
}
TEST_F(DBPropertiesTest, EstimateOldestKeyTime) {
uint64_t oldest_key_time = 0;
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
Options options = CurrentOptions();
SetTimeElapseOnlySleepOnReopen(&options);
// "rocksdb.estimate-oldest-key-time" only available to fifo compaction.
for (auto compaction : {kCompactionStyleLevel, kCompactionStyleUniversal,
kCompactionStyleNone}) {
options.compaction_style = compaction;
options.create_if_missing = true;
DestroyAndReopen(options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_FALSE(dbfull()->GetIntProperty(
DB::Properties::kEstimateOldestKeyTime, &oldest_key_time));
}
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
int64_t mock_start_time;
ASSERT_OK(env_->GetCurrentTime(&mock_start_time));
options.compaction_style = kCompactionStyleFIFO;
options.ttl = 300;
options.compaction_options_fifo.allow_compaction = false;
DestroyAndReopen(options);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(100);
ASSERT_OK(Put("k1", "v1"));
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(100, oldest_key_time - mock_start_time);
ASSERT_OK(Flush());
ASSERT_EQ("1", FilesPerLevel());
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(100, oldest_key_time - mock_start_time);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(100); // -> 200
ASSERT_OK(Put("k2", "v2"));
ASSERT_OK(Flush());
ASSERT_EQ("2", FilesPerLevel());
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(100, oldest_key_time - mock_start_time);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(100); // -> 300
ASSERT_OK(Put("k3", "v3"));
ASSERT_OK(Flush());
ASSERT_EQ("3", FilesPerLevel());
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(100, oldest_key_time - mock_start_time);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(150); // -> 450
ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ASSERT_EQ("2", FilesPerLevel());
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(200, oldest_key_time - mock_start_time);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(100); // -> 550
ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ASSERT_EQ("1", FilesPerLevel());
ASSERT_TRUE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
ASSERT_EQ(300, oldest_key_time - mock_start_time);
Fix+clean up handling of mock sleeps (#7101) Summary: We have a number of tests hanging on MacOS and windows due to mishandling of code for mock sleeps. In addition, the code was in terrible shape because the same variable (addon_time_) would sometimes refer to microseconds and sometimes to seconds. One test even assumed it was nanoseconds but was written to pass anyway. This has been cleaned up so that DB tests generally use a SpecialEnv function to mock sleep, for either some number of microseconds or seconds depending on the function called. But to call one of these, the test must first call SetMockSleep (precondition enforced with assertion), which also turns sleeps in RocksDB into mock sleeps. To also removes accounting for actual clock time, call SetTimeElapseOnlySleepOnReopen, which implies SetMockSleep (on DB re-open). This latter setting only works by applying on DB re-open, otherwise havoc can ensue if Env goes back in time with DB open. More specifics: Removed some unused test classes, and updated comments on the general problem. Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead of mock time. For this we have the only modification to production code, inserting a sync point callback in flush_job.cc, which is not a change to production behavior. Removed unnecessary resetting of mock times to 0 in many tests. RocksDB deals in relative time. Any behaviors relying on absolute date/time are likely a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one clearly injecting a specific absolute time for actual testing convenience.) Just in case I misunderstood some test, I put this note in each replacement: // NOTE: Presumed unnecessary and removed: resetting mock time in env Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and FilterCompactionTimeTest in db_test.cc stats_history_test and blob_db_test are each their own beast, rather deeply dependent on MockTimeEnv. Each gets its own variant of a work-around for TimedWait in a mock time environment. (Reduces redundancy and inconsistency in stats_history_test.) Intended follow-up: Remove TimedWait from the public API of InstrumentedCondVar, and only make that accessible through Env by passing in an InstrumentedCondVar and a deadline. Then the Env implementations mocking time can fix this problem without using sync points. (Test infrastructure using sync points interferes with individual tests' control over sync points.) With that change, we can simplify/consolidate the scattered work-arounds. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101 Test Plan: make check on Linux and MacOS Reviewed By: zhichao-cao Differential Revision: D23032815 Pulled By: pdillinger fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
4 years ago
env_->MockSleepForSeconds(100); // -> 650
ASSERT_OK(dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ASSERT_EQ("", FilesPerLevel());
ASSERT_FALSE(dbfull()->GetIntProperty(DB::Properties::kEstimateOldestKeyTime,
&oldest_key_time));
}
TEST_F(DBPropertiesTest, SstFilesSize) {
struct TestListener : public EventListener {
void OnCompactionCompleted(DB* db,
const CompactionJobInfo& /*info*/) override {
assert(callback_triggered == false);
assert(size_before_compaction > 0);
callback_triggered = true;
uint64_t total_sst_size = 0;
uint64_t live_sst_size = 0;
bool ok = db->GetIntProperty(DB::Properties::kTotalSstFilesSize,
&total_sst_size);
ASSERT_TRUE(ok);
// total_sst_size include files before and after compaction.
ASSERT_GT(total_sst_size, size_before_compaction);
ok =
db->GetIntProperty(DB::Properties::kLiveSstFilesSize, &live_sst_size);
ASSERT_TRUE(ok);
// live_sst_size only include files after compaction.
ASSERT_GT(live_sst_size, 0);
ASSERT_LT(live_sst_size, size_before_compaction);
}
uint64_t size_before_compaction = 0;
bool callback_triggered = false;
};
std::shared_ptr<TestListener> listener = std::make_shared<TestListener>();
Options options;
options.disable_auto_compactions = true;
options.listeners.push_back(listener);
Reopen(options);
for (int i = 0; i < 10; i++) {
ASSERT_OK(Put("key" + ToString(i), std::string(1000, 'v')));
}
ASSERT_OK(Flush());
for (int i = 0; i < 5; i++) {
ASSERT_OK(Delete("key" + ToString(i)));
}
ASSERT_OK(Flush());
uint64_t sst_size;
bool ok = db_->GetIntProperty(DB::Properties::kTotalSstFilesSize, &sst_size);
ASSERT_TRUE(ok);
ASSERT_GT(sst_size, 0);
listener->size_before_compaction = sst_size;
// Compact to clean all keys and trigger listener.
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ASSERT_TRUE(listener->callback_triggered);
}
TEST_F(DBPropertiesTest, MinObsoleteSstNumberToKeep) {
class TestListener : public EventListener {
public:
void OnTableFileCreated(const TableFileCreationInfo& info) override {
if (info.reason == TableFileCreationReason::kCompaction) {
// Verify the property indicates that SSTs created by a running
// compaction cannot be deleted.
uint64_t created_file_num;
FileType created_file_type;
std::string filename =
info.file_path.substr(info.file_path.rfind('/') + 1);
ASSERT_TRUE(
ParseFileName(filename, &created_file_num, &created_file_type));
ASSERT_EQ(kTableFile, created_file_type);
uint64_t keep_sst_lower_bound;
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kMinObsoleteSstNumberToKeep,
&keep_sst_lower_bound));
ASSERT_LE(keep_sst_lower_bound, created_file_num);
validated_ = true;
}
}
void SetDB(DB* db) { db_ = db; }
int GetNumCompactions() { return num_compactions_; }
// True if we've verified the property for at least one output file
bool Validated() { return validated_; }
private:
int num_compactions_ = 0;
bool validated_ = false;
DB* db_ = nullptr;
};
const int kNumL0Files = 4;
std::shared_ptr<TestListener> listener = std::make_shared<TestListener>();
Options options = CurrentOptions();
options.listeners.push_back(listener);
options.level0_file_num_compaction_trigger = kNumL0Files;
DestroyAndReopen(options);
listener->SetDB(db_);
for (int i = 0; i < kNumL0Files; ++i) {
// Make sure they overlap in keyspace to prevent trivial move
ASSERT_OK(Put("key1", "val"));
ASSERT_OK(Put("key2", "val"));
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_TRUE(listener->Validated());
}
TEST_F(DBPropertiesTest, BlockCacheProperties) {
Options options;
uint64_t value;
// Block cache properties are not available for tables other than
// block-based table.
options.table_factory.reset(NewPlainTableFactory());
Reopen(options);
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_FALSE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
options.table_factory.reset(NewCuckooTableFactory());
Reopen(options);
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_FALSE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
// Block cache properties are not available if block cache is not used.
BlockBasedTableOptions table_options;
table_options.no_block_cache = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
Reopen(options);
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_FALSE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_FALSE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
// Test with empty block cache.
constexpr size_t kCapacity = 100;
LRUCacheOptions co;
co.capacity = kCapacity;
co.num_shard_bits = 0;
co.metadata_charge_policy = kDontChargeCacheMetadata;
auto block_cache = NewLRUCache(co);
table_options.block_cache = block_cache;
table_options.no_block_cache = false;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
Reopen(options);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_EQ(kCapacity, value);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_EQ(0, value);
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
ASSERT_EQ(0, value);
// Insert unpinned item to the cache and check size.
constexpr size_t kSize1 = 50;
ASSERT_OK(block_cache->Insert("item1", nullptr /*value*/, kSize1,
nullptr /*deleter*/));
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_EQ(kCapacity, value);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_EQ(kSize1, value);
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
ASSERT_EQ(0, value);
// Insert pinned item to the cache and check size.
constexpr size_t kSize2 = 30;
Cache::Handle* item2 = nullptr;
ASSERT_OK(block_cache->Insert("item2", nullptr /*value*/, kSize2,
nullptr /*deleter*/, &item2));
ASSERT_NE(nullptr, item2);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_EQ(kCapacity, value);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
ASSERT_EQ(kSize1 + kSize2, value);
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
ASSERT_EQ(kSize2, value);
// Insert another pinned item to make the cache over-sized.
constexpr size_t kSize3 = 80;
Cache::Handle* item3 = nullptr;
ASSERT_OK(block_cache->Insert("item3", nullptr /*value*/, kSize3,
nullptr /*deleter*/, &item3));
ASSERT_NE(nullptr, item2);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_EQ(kCapacity, value);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
// Item 1 is evicted.
ASSERT_EQ(kSize2 + kSize3, value);
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
ASSERT_EQ(kSize2 + kSize3, value);
// Check size after release.
block_cache->Release(item2);
block_cache->Release(item3);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheCapacity, &value));
ASSERT_EQ(kCapacity, value);
ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBlockCacheUsage, &value));
// item2 will be evicted, while item3 remain in cache after release.
ASSERT_EQ(kSize3, value);
ASSERT_TRUE(
db_->GetIntProperty(DB::Properties::kBlockCachePinnedUsage, &value));
ASSERT_EQ(0, value);
}
#endif // ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}