rocksdb/db/compaction/compaction_picker_test.cc
Levi Tamasi 5f025ea832 BlobDB GC: add SST <-> oldest blob file referenced mapping (#5903)
Summary:
This is groundwork for adding garbage collection support to BlobDB. The
patch adds logic that keeps track of the oldest blob file referred to by
each SST file. The oldest blob file is identified during flush/
compaction (similarly to how the range of keys covered by the SST is
identified), and persisted in the manifest as a custom field of the new
file edit record. Blob indexes with TTL are ignored for the purposes of
identifying the oldest blob file (since such blob files are cleaned up by the
TTL logic in BlobDB).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5903

Test Plan:
Added new unit tests; also ran db_bench in BlobDB mode, inspected the
manifest using ldb, and confirmed (by scanning the SST files using
sst_dump) that the value of the oldest blob file number field matches
the contents of the file for each SST.

Differential Revision: D17859997

Pulled By: ltamasi

fbshipit-source-id: 21662c137c6259a6af70446faaf3a9912c550e90
2019-10-14 15:21:01 -07:00

1544 lines
61 KiB
C++

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include <limits>
#include <string>
#include <utility>
#include "db/compaction/compaction.h"
#include "db/compaction/compaction_picker_fifo.h"
#include "db/compaction/compaction_picker_level.h"
#include "db/compaction/compaction_picker_universal.h"
#include "logging/logging.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/string_util.h"
namespace rocksdb {
class CountingLogger : public Logger {
public:
using Logger::Logv;
void Logv(const char* /*format*/, va_list /*ap*/) override { log_count++; }
size_t log_count;
};
class CompactionPickerTest : public testing::Test {
public:
const Comparator* ucmp_;
InternalKeyComparator icmp_;
Options options_;
ImmutableCFOptions ioptions_;
MutableCFOptions mutable_cf_options_;
LevelCompactionPicker level_compaction_picker;
std::string cf_name_;
CountingLogger logger_;
LogBuffer log_buffer_;
uint32_t file_num_;
CompactionOptionsFIFO fifo_options_;
std::unique_ptr<VersionStorageInfo> vstorage_;
std::vector<std::unique_ptr<FileMetaData>> files_;
// does not own FileMetaData
std::unordered_map<uint32_t, std::pair<FileMetaData*, int>> file_map_;
// input files to compaction process.
std::vector<CompactionInputFiles> input_files_;
int compaction_level_start_;
CompactionPickerTest()
: ucmp_(BytewiseComparator()),
icmp_(ucmp_),
ioptions_(options_),
mutable_cf_options_(options_),
level_compaction_picker(ioptions_, &icmp_),
cf_name_("dummy"),
log_buffer_(InfoLogLevel::INFO_LEVEL, &logger_),
file_num_(1),
vstorage_(nullptr) {
// ioptions_.compaction_pri = kMinOverlappingRatio has its own set of
// tests to cover.
ioptions_.compaction_pri = kByCompensatedSize;
fifo_options_.max_table_files_size = 1;
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
ioptions_.cf_paths.emplace_back("dummy",
std::numeric_limits<uint64_t>::max());
}
~CompactionPickerTest() override {}
void NewVersionStorage(int num_levels, CompactionStyle style) {
DeleteVersionStorage();
options_.num_levels = num_levels;
vstorage_.reset(new VersionStorageInfo(&icmp_, ucmp_, options_.num_levels,
style, nullptr, false));
vstorage_->CalculateBaseBytes(ioptions_, mutable_cf_options_);
}
void DeleteVersionStorage() {
vstorage_.reset();
files_.clear();
file_map_.clear();
input_files_.clear();
}
void Add(int level, uint32_t file_number, const char* smallest,
const char* largest, uint64_t file_size = 1, uint32_t path_id = 0,
SequenceNumber smallest_seq = 100, SequenceNumber largest_seq = 100,
size_t compensated_file_size = 0) {
assert(level < vstorage_->num_levels());
FileMetaData* f = new FileMetaData(
file_number, path_id, file_size,
InternalKey(smallest, smallest_seq, kTypeValue),
InternalKey(largest, largest_seq, kTypeValue), smallest_seq,
largest_seq, /* marked_for_compact */ false, kInvalidBlobFileNumber);
f->compensated_file_size =
(compensated_file_size != 0) ? compensated_file_size : file_size;
vstorage_->AddFile(level, f);
files_.emplace_back(f);
file_map_.insert({file_number, {f, level}});
}
void SetCompactionInputFilesLevels(int level_count, int start_level) {
input_files_.resize(level_count);
for (int i = 0; i < level_count; ++i) {
input_files_[i].level = start_level + i;
}
compaction_level_start_ = start_level;
}
void AddToCompactionFiles(uint32_t file_number) {
auto iter = file_map_.find(file_number);
assert(iter != file_map_.end());
int level = iter->second.second;
assert(level < vstorage_->num_levels());
input_files_[level - compaction_level_start_].files.emplace_back(
iter->second.first);
}
void UpdateVersionStorageInfo() {
vstorage_->CalculateBaseBytes(ioptions_, mutable_cf_options_);
vstorage_->UpdateFilesByCompactionPri(ioptions_.compaction_pri);
vstorage_->UpdateNumNonEmptyLevels();
vstorage_->GenerateFileIndexer();
vstorage_->GenerateLevelFilesBrief();
vstorage_->ComputeCompactionScore(ioptions_, mutable_cf_options_);
vstorage_->GenerateLevel0NonOverlapping();
vstorage_->ComputeFilesMarkedForCompaction();
vstorage_->SetFinalized();
}
};
TEST_F(CompactionPickerTest, Empty) {
NewVersionStorage(6, kCompactionStyleLevel);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() == nullptr);
}
TEST_F(CompactionPickerTest, Single) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
Add(0, 1U, "p", "q");
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() == nullptr);
}
TEST_F(CompactionPickerTest, Level0Trigger) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
Add(0, 1U, "150", "200");
Add(0, 2U, "200", "250");
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, Level1Trigger) {
NewVersionStorage(6, kCompactionStyleLevel);
Add(1, 66U, "150", "200", 1000000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, Level1Trigger2) {
mutable_cf_options_.target_file_size_base = 10000000000;
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
NewVersionStorage(6, kCompactionStyleLevel);
Add(1, 66U, "150", "200", 1000000001U);
Add(1, 88U, "201", "300", 1000000000U);
Add(2, 6U, "150", "179", 1000000000U);
Add(2, 7U, "180", "220", 1000000000U);
Add(2, 8U, "221", "300", 1000000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(2U, compaction->num_input_files(1));
ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
ASSERT_EQ(uint64_t{1073741824}, compaction->OutputFilePreallocationSize());
}
TEST_F(CompactionPickerTest, LevelMaxScore) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.target_file_size_base = 10000000;
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
Add(0, 1U, "150", "200", 1000000U);
// Level 1 score 1.2
Add(1, 66U, "150", "200", 6000000U);
Add(1, 88U, "201", "300", 6000000U);
// Level 2 score 1.8. File 7 is the largest. Should be picked
Add(2, 6U, "150", "179", 60000000U);
Add(2, 7U, "180", "220", 60000001U);
Add(2, 8U, "221", "300", 60000000U);
// Level 3 score slightly larger than 1
Add(3, 26U, "150", "170", 260000000U);
Add(3, 27U, "171", "179", 260000000U);
Add(3, 28U, "191", "220", 260000000U);
Add(3, 29U, "221", "300", 260000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(mutable_cf_options_.target_file_size_base +
mutable_cf_options_.target_file_size_base / 10,
compaction->OutputFilePreallocationSize());
}
TEST_F(CompactionPickerTest, NeedsCompactionLevel) {
const int kLevels = 6;
const int kFileCount = 20;
for (int level = 0; level < kLevels - 1; ++level) {
NewVersionStorage(kLevels, kCompactionStyleLevel);
uint64_t file_size = vstorage_->MaxBytesForLevel(level) * 2 / kFileCount;
for (int file_count = 1; file_count <= kFileCount; ++file_count) {
// start a brand new version in each test.
NewVersionStorage(kLevels, kCompactionStyleLevel);
for (int i = 0; i < file_count; ++i) {
Add(level, i, ToString((i + 100) * 1000).c_str(),
ToString((i + 100) * 1000 + 999).c_str(),
file_size, 0, i * 100, i * 100 + 99);
}
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_->CompactionScoreLevel(0), level);
ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
vstorage_->CompactionScore(0) >= 1);
// release the version storage
DeleteVersionStorage();
}
}
}
TEST_F(CompactionPickerTest, Level0TriggerDynamic) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200");
Add(0, 2U, "200", "250");
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
ASSERT_EQ(num_levels - 1, compaction->output_level());
}
TEST_F(CompactionPickerTest, Level0TriggerDynamic2) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200");
Add(0, 2U, "200", "250");
Add(num_levels - 1, 3U, "200", "250", 300U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_->base_level(), num_levels - 2);
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
ASSERT_EQ(num_levels - 2, compaction->output_level());
}
TEST_F(CompactionPickerTest, Level0TriggerDynamic3) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200");
Add(0, 2U, "200", "250");
Add(num_levels - 1, 3U, "200", "250", 300U);
Add(num_levels - 1, 4U, "300", "350", 3000U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_->base_level(), num_levels - 3);
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(1, static_cast<int>(compaction->num_input_levels()));
ASSERT_EQ(num_levels - 3, compaction->output_level());
}
TEST_F(CompactionPickerTest, Level0TriggerDynamic4) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200");
Add(0, 2U, "200", "250");
Add(num_levels - 1, 3U, "200", "250", 300U);
Add(num_levels - 1, 4U, "300", "350", 3000U);
Add(num_levels - 3, 5U, "150", "180", 3U);
Add(num_levels - 3, 6U, "181", "300", 3U);
Add(num_levels - 3, 7U, "400", "450", 3U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_->base_level(), num_levels - 3);
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(2U, compaction->num_input_files(1));
ASSERT_EQ(num_levels - 3, compaction->level(1));
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(6U, compaction->input(1, 1)->fd.GetNumber());
ASSERT_EQ(2, static_cast<int>(compaction->num_input_levels()));
ASSERT_EQ(num_levels - 3, compaction->output_level());
}
TEST_F(CompactionPickerTest, LevelTriggerDynamic4) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
ioptions_.compaction_pri = kMinOverlappingRatio;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200");
Add(num_levels - 1, 3U, "200", "250", 300U);
Add(num_levels - 1, 4U, "300", "350", 3000U);
Add(num_levels - 1, 4U, "400", "450", 3U);
Add(num_levels - 2, 5U, "150", "180", 300U);
Add(num_levels - 2, 6U, "181", "350", 500U);
Add(num_levels - 2, 7U, "400", "450", 200U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(5U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(0, compaction->num_input_files(1));
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(num_levels - 1, compaction->output_level());
}
// Universal and FIFO Compactions are not supported in ROCKSDB_LITE
#ifndef ROCKSDB_LITE
TEST_F(CompactionPickerTest, NeedsCompactionUniversal) {
NewVersionStorage(1, kCompactionStyleUniversal);
UniversalCompactionPicker universal_compaction_picker(
ioptions_, &icmp_);
UpdateVersionStorageInfo();
// must return false when there's no files.
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
false);
// verify the trigger given different number of L0 files.
for (int i = 1;
i <= mutable_cf_options_.level0_file_num_compaction_trigger * 2; ++i) {
NewVersionStorage(1, kCompactionStyleUniversal);
Add(0, i, ToString((i + 100) * 1000).c_str(),
ToString((i + 100) * 1000 + 999).c_str(), 1000000, 0, i * 100,
i * 100 + 99);
UpdateVersionStorageInfo();
ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
vstorage_->CompactionScore(0) >= 1);
}
}
TEST_F(CompactionPickerTest, CompactionUniversalIngestBehindReservedLevel) {
const uint64_t kFileSize = 100000;
NewVersionStorage(1, kCompactionStyleUniversal);
ioptions_.allow_ingest_behind = true;
ioptions_.num_levels = 3;
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
UpdateVersionStorageInfo();
// must return false when there's no files.
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
false);
NewVersionStorage(3, kCompactionStyleUniversal);
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
Add(1, 5U, "100", "151", kFileSize, 0, 200, 251);
Add(1, 3U, "301", "350", kFileSize, 0, 101, 150);
Add(2, 6U, "120", "200", kFileSize, 0, 20, 100);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(
universal_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
// output level should be the one above the bottom-most
ASSERT_EQ(1, compaction->output_level());
}
// Tests if the files can be trivially moved in multi level
// universal compaction when allow_trivial_move option is set
// In this test as the input files overlaps, they cannot
// be trivially moved.
TEST_F(CompactionPickerTest, CannotTrivialMoveUniversal) {
const uint64_t kFileSize = 100000;
mutable_cf_options_.compaction_options_universal.allow_trivial_move = true;
NewVersionStorage(1, kCompactionStyleUniversal);
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
UpdateVersionStorageInfo();
// must return false when there's no files.
ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
false);
NewVersionStorage(3, kCompactionStyleUniversal);
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
Add(1, 5U, "100", "151", kFileSize, 0, 200, 251);
Add(1, 3U, "301", "350", kFileSize, 0, 101, 150);
Add(2, 6U, "120", "200", kFileSize, 0, 20, 100);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(
universal_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(!compaction->is_trivial_move());
}
// Tests if the files can be trivially moved in multi level
// universal compaction when allow_trivial_move option is set
// In this test as the input files doesn't overlaps, they should
// be trivially moved.
TEST_F(CompactionPickerTest, AllowsTrivialMoveUniversal) {
const uint64_t kFileSize = 100000;
mutable_cf_options_.compaction_options_universal.allow_trivial_move = true;
UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_);
NewVersionStorage(3, kCompactionStyleUniversal);
Add(0, 1U, "150", "200", kFileSize, 0, 500, 550);
Add(0, 2U, "201", "250", kFileSize, 0, 401, 450);
Add(0, 4U, "260", "300", kFileSize, 0, 260, 300);
Add(1, 5U, "010", "080", kFileSize, 0, 200, 251);
Add(2, 3U, "301", "350", kFileSize, 0, 101, 150);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(
universal_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction->is_trivial_move());
}
TEST_F(CompactionPickerTest, NeedsCompactionFIFO) {
NewVersionStorage(1, kCompactionStyleFIFO);
const int kFileCount =
mutable_cf_options_.level0_file_num_compaction_trigger * 3;
const uint64_t kFileSize = 100000;
const uint64_t kMaxSize = kFileSize * kFileCount / 2;
fifo_options_.max_table_files_size = kMaxSize;
mutable_cf_options_.compaction_options_fifo = fifo_options_;
FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
UpdateVersionStorageInfo();
// must return false when there's no files.
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), false);
// verify whether compaction is needed based on the current
// size of L0 files.
uint64_t current_size = 0;
for (int i = 1; i <= kFileCount; ++i) {
NewVersionStorage(1, kCompactionStyleFIFO);
Add(0, i, ToString((i + 100) * 1000).c_str(),
ToString((i + 100) * 1000 + 999).c_str(),
kFileSize, 0, i * 100, i * 100 + 99);
current_size += kFileSize;
UpdateVersionStorageInfo();
ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()),
vstorage_->CompactionScore(0) >= 1);
}
}
#endif // ROCKSDB_LITE
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping1) {
NewVersionStorage(6, kCompactionStyleLevel);
ioptions_.compaction_pri = kMinOverlappingRatio;
mutable_cf_options_.target_file_size_base = 100000000000;
mutable_cf_options_.target_file_size_multiplier = 10;
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
mutable_cf_options_.RefreshDerivedOptions(ioptions_);
Add(2, 6U, "150", "179", 50000000U);
Add(2, 7U, "180", "220", 50000000U);
Add(2, 8U, "321", "400", 50000000U); // File not overlapping
Add(2, 9U, "721", "800", 50000000U);
Add(3, 26U, "150", "170", 260000000U);
Add(3, 27U, "171", "179", 260000000U);
Add(3, 28U, "191", "220", 260000000U);
Add(3, 29U, "221", "300", 260000000U);
Add(3, 30U, "750", "900", 260000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
// Pick file 8 because it overlaps with 0 files on level 3.
ASSERT_EQ(8U, compaction->input(0, 0)->fd.GetNumber());
// Compaction input size * 1.1
ASSERT_GE(uint64_t{55000000}, compaction->OutputFilePreallocationSize());
}
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping2) {
NewVersionStorage(6, kCompactionStyleLevel);
ioptions_.compaction_pri = kMinOverlappingRatio;
mutable_cf_options_.target_file_size_base = 10000000;
mutable_cf_options_.target_file_size_multiplier = 10;
mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
Add(2, 6U, "150", "175",
60000000U); // Overlaps with file 26, 27, total size 521M
Add(2, 7U, "176", "200", 60000000U); // Overlaps with file 27, 28, total size
// 520M, the smalelst overlapping
Add(2, 8U, "201", "300",
60000000U); // Overlaps with file 28, 29, total size 521M
Add(3, 26U, "100", "110", 261000000U);
Add(3, 26U, "150", "170", 261000000U);
Add(3, 27U, "171", "179", 260000000U);
Add(3, 28U, "191", "220", 260000000U);
Add(3, 29U, "221", "300", 261000000U);
Add(3, 30U, "321", "400", 261000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
// Picking file 7 because overlapping ratio is the biggest.
ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping3) {
NewVersionStorage(6, kCompactionStyleLevel);
ioptions_.compaction_pri = kMinOverlappingRatio;
mutable_cf_options_.max_bytes_for_level_base = 10000000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
// file 7 and 8 over lap with the same file, but file 8 is smaller so
// it will be picked.
Add(2, 6U, "150", "167", 60000000U); // Overlaps with file 26, 27
Add(2, 7U, "168", "169", 60000000U); // Overlaps with file 27
Add(2, 8U, "201", "300", 61000000U); // Overlaps with file 28, but the file
// itself is larger. Should be picked.
Add(3, 26U, "160", "165", 260000000U);
Add(3, 27U, "166", "170", 260000000U);
Add(3, 28U, "180", "400", 260000000U);
Add(3, 29U, "401", "500", 260000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
// Picking file 8 because overlapping ratio is the biggest.
ASSERT_EQ(8U, compaction->input(0, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, CompactionPriMinOverlapping4) {
NewVersionStorage(6, kCompactionStyleLevel);
ioptions_.compaction_pri = kMinOverlappingRatio;
mutable_cf_options_.max_bytes_for_level_base = 10000000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
// file 7 and 8 over lap with the same file, but file 8 is smaller so
// it will be picked.
// Overlaps with file 26, 27. And the file is compensated so will be
// picked up.
Add(2, 6U, "150", "167", 60000000U, 0, 100, 100, 180000000U);
Add(2, 7U, "168", "169", 60000000U); // Overlaps with file 27
Add(2, 8U, "201", "300", 61000000U); // Overlaps with file 28
Add(3, 26U, "160", "165", 60000000U);
// Boosted file size in output level is not considered.
Add(3, 27U, "166", "170", 60000000U, 0, 100, 100, 260000000U);
Add(3, 28U, "180", "400", 60000000U);
Add(3, 29U, "401", "500", 60000000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_files(0));
// Picking file 8 because overlapping ratio is the biggest.
ASSERT_EQ(6U, compaction->input(0, 0)->fd.GetNumber());
}
// This test exhibits the bug where we don't properly reset parent_index in
// PickCompaction()
TEST_F(CompactionPickerTest, ParentIndexResetBug) {
int num_levels = ioptions_.num_levels;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 200;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200"); // <- marked for compaction
Add(1, 3U, "400", "500", 600); // <- this one needs compacting
Add(2, 4U, "150", "200");
Add(2, 5U, "201", "210");
Add(2, 6U, "300", "310");
Add(2, 7U, "400", "500"); // <- being compacted
vstorage_->LevelFiles(2)[3]->being_compacted = true;
vstorage_->LevelFiles(0)[0]->marked_for_compaction = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
}
// This test checks ExpandWhileOverlapping() by having overlapping user keys
// ranges (with different sequence numbers) in the input files.
TEST_F(CompactionPickerTest, OverlappingUserKeys) {
NewVersionStorage(6, kCompactionStyleLevel);
ioptions_.compaction_pri = kByCompensatedSize;
Add(1, 1U, "100", "150", 1U);
// Overlapping user keys
Add(1, 2U, "200", "400", 1U);
Add(1, 3U, "400", "500", 1000000000U, 0, 0);
Add(2, 4U, "600", "700", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys2) {
NewVersionStorage(6, kCompactionStyleLevel);
// Overlapping user keys on same level and output level
Add(1, 1U, "200", "400", 1000000000U);
Add(1, 2U, "400", "500", 1U, 0, 0);
Add(2, 3U, "000", "100", 1U);
Add(2, 4U, "100", "600", 1U, 0, 0);
Add(2, 5U, "600", "700", 1U, 0, 0);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(2U, compaction->num_input_files(0));
ASSERT_EQ(3U, compaction->num_input_files(1));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(4U, compaction->input(1, 1)->fd.GetNumber());
ASSERT_EQ(5U, compaction->input(1, 2)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys3) {
NewVersionStorage(6, kCompactionStyleLevel);
// Chain of overlapping user key ranges (forces ExpandWhileOverlapping() to
// expand multiple times)
Add(1, 1U, "100", "150", 1U);
Add(1, 2U, "150", "200", 1U, 0, 0);
Add(1, 3U, "200", "250", 1000000000U, 0, 0);
Add(1, 4U, "250", "300", 1U, 0, 0);
Add(1, 5U, "300", "350", 1U, 0, 0);
// Output level overlaps with the beginning and the end of the chain
Add(2, 6U, "050", "100", 1U);
Add(2, 7U, "350", "400", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(5U, compaction->num_input_files(0));
ASSERT_EQ(2U, compaction->num_input_files(1));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
ASSERT_EQ(4U, compaction->input(0, 3)->fd.GetNumber());
ASSERT_EQ(5U, compaction->input(0, 4)->fd.GetNumber());
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys4) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_bytes_for_level_base = 1000000;
Add(1, 1U, "100", "150", 1U);
Add(1, 2U, "150", "199", 1U, 0, 0);
Add(1, 3U, "200", "250", 1100000U, 0, 0);
Add(1, 4U, "251", "300", 1U, 0, 0);
Add(1, 5U, "300", "350", 1U, 0, 0);
Add(2, 6U, "100", "115", 1U);
Add(2, 7U, "125", "325", 1U);
Add(2, 8U, "350", "400", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->num_input_files(1));
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys5) {
NewVersionStorage(6, kCompactionStyleLevel);
// Overlapping user keys on same level and output level
Add(1, 1U, "200", "400", 1000000000U);
Add(1, 2U, "400", "500", 1U, 0, 0);
Add(2, 3U, "000", "100", 1U);
Add(2, 4U, "100", "600", 1U, 0, 0);
Add(2, 5U, "600", "700", 1U, 0, 0);
vstorage_->LevelFiles(2)[2]->being_compacted = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() == nullptr);
}
TEST_F(CompactionPickerTest, OverlappingUserKeys6) {
NewVersionStorage(6, kCompactionStyleLevel);
// Overlapping user keys on same level and output level
Add(1, 1U, "200", "400", 1U, 0, 0);
Add(1, 2U, "401", "500", 1U, 0, 0);
Add(2, 3U, "000", "100", 1U);
Add(2, 4U, "100", "300", 1U, 0, 0);
Add(2, 5U, "305", "450", 1U, 0, 0);
Add(2, 6U, "460", "600", 1U, 0, 0);
Add(2, 7U, "600", "700", 1U, 0, 0);
vstorage_->LevelFiles(1)[0]->marked_for_compaction = true;
vstorage_->LevelFiles(1)[1]->marked_for_compaction = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(3U, compaction->num_input_files(1));
}
TEST_F(CompactionPickerTest, OverlappingUserKeys7) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
// Overlapping user keys on same level and output level
Add(1, 1U, "200", "400", 1U, 0, 0);
Add(1, 2U, "401", "500", 1000000000U, 0, 0);
Add(2, 3U, "100", "250", 1U);
Add(2, 4U, "300", "600", 1U, 0, 0);
Add(2, 5U, "600", "800", 1U, 0, 0);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_GE(1U, compaction->num_input_files(0));
ASSERT_GE(2U, compaction->num_input_files(1));
// File 5 has to be included in the compaction
ASSERT_EQ(5U, compaction->inputs(1)->back()->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys8) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
// grow the number of inputs in "level" without
// changing the number of "level+1" files we pick up
// Expand input level as much as possible
// no overlapping case
Add(1, 1U, "101", "150", 1U);
Add(1, 2U, "151", "200", 1U);
Add(1, 3U, "201", "300", 1000000000U);
Add(1, 4U, "301", "400", 1U);
Add(1, 5U, "401", "500", 1U);
Add(2, 6U, "150", "200", 1U);
Add(2, 7U, "200", "450", 1U, 0, 0);
Add(2, 8U, "500", "600", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(3U, compaction->num_input_files(0));
ASSERT_EQ(2U, compaction->num_input_files(1));
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(4U, compaction->input(0, 2)->fd.GetNumber());
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys9) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
// grow the number of inputs in "level" without
// changing the number of "level+1" files we pick up
// Expand input level as much as possible
// overlapping case
Add(1, 1U, "121", "150", 1U);
Add(1, 2U, "151", "200", 1U);
Add(1, 3U, "201", "300", 1000000000U);
Add(1, 4U, "301", "400", 1U);
Add(1, 5U, "401", "500", 1U);
Add(2, 6U, "100", "120", 1U);
Add(2, 7U, "150", "200", 1U);
Add(2, 8U, "200", "450", 1U, 0, 0);
Add(2, 9U, "501", "600", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(5U, compaction->num_input_files(0));
ASSERT_EQ(2U, compaction->num_input_files(1));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
ASSERT_EQ(4U, compaction->input(0, 3)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
ASSERT_EQ(8U, compaction->input(1, 1)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys10) {
// Locked file encountered when pulling in extra input-level files with same
// user keys. Verify we pick the next-best file from the same input level.
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
// file_number 2U is largest and thus first choice. But it overlaps with
// file_number 1U which is being compacted. So instead we pick the next-
// biggest file, 3U, which is eligible for compaction.
Add(1 /* level */, 1U /* file_number */, "100" /* smallest */,
"150" /* largest */, 1U /* file_size */);
file_map_[1U].first->being_compacted = true;
Add(1 /* level */, 2U /* file_number */, "150" /* smallest */,
"200" /* largest */, 1000000000U /* file_size */, 0 /* smallest_seq */,
0 /* largest_seq */);
Add(1 /* level */, 3U /* file_number */, "201" /* smallest */,
"250" /* largest */, 900000000U /* file_size */);
Add(2 /* level */, 4U /* file_number */, "100" /* smallest */,
"150" /* largest */, 1U /* file_size */);
Add(2 /* level */, 5U /* file_number */, "151" /* smallest */,
"200" /* largest */, 1U /* file_size */);
Add(2 /* level */, 6U /* file_number */, "201" /* smallest */,
"250" /* largest */, 1U /* file_size */);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->num_input_files(1));
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, OverlappingUserKeys11) {
// Locked file encountered when pulling in extra output-level files with same
// user keys. Expected to skip that compaction and pick the next-best choice.
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
// score(L1) = 3.7
// score(L2) = 1.85
// There is no eligible file in L1 to compact since both candidates pull in
// file_number 5U, which overlaps with a file pending compaction (6U). The
// first eligible compaction is from L2->L3.
Add(1 /* level */, 2U /* file_number */, "151" /* smallest */,
"200" /* largest */, 1000000000U /* file_size */);
Add(1 /* level */, 3U /* file_number */, "201" /* smallest */,
"250" /* largest */, 1U /* file_size */);
Add(2 /* level */, 4U /* file_number */, "100" /* smallest */,
"149" /* largest */, 5000000000U /* file_size */);
Add(2 /* level */, 5U /* file_number */, "150" /* smallest */,
"201" /* largest */, 1U /* file_size */);
Add(2 /* level */, 6U /* file_number */, "201" /* smallest */,
"249" /* largest */, 1U /* file_size */, 0 /* smallest_seq */,
0 /* largest_seq */);
file_map_[6U].first->being_compacted = true;
Add(3 /* level */, 7U /* file_number */, "100" /* smallest */,
"149" /* largest */, 1U /* file_size */);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->num_input_files(1));
ASSERT_EQ(4U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri1) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
// 6 L0 files, score 3.
Add(0, 1U, "000", "400", 1U);
Add(0, 2U, "001", "400", 1U, 0, 0);
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
// L1 total size 2GB, score 2.2. If one file being comapcted, score 1.1.
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
file_map_[4u].first->being_compacted = true;
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
// Output level overlaps with the beginning and the end of the chain
Add(2, 6U, "050", "100", 1U);
Add(2, 7U, "300", "400", 1U);
// No compaction should be scheduled, if L0 has higher priority than L1
// but L0->L1 compaction is blocked by a file in L1 being compacted.
UpdateVersionStorageInfo();
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(0));
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(1));
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() == nullptr);
}
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri2) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
// 6 L0 files, score 3.
Add(0, 1U, "000", "400", 1U);
Add(0, 2U, "001", "400", 1U, 0, 0);
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
// L1 total size 2GB, score 2.2. If one file being comapcted, score 1.1.
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
// Output level overlaps with the beginning and the end of the chain
Add(2, 6U, "050", "100", 1U);
Add(2, 7U, "300", "400", 1U);
// If no file in L1 being compacted, L0->L1 compaction will be scheduled.
UpdateVersionStorageInfo(); // being_compacted flag is cleared here.
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(0));
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(1));
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
}
TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri3) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
mutable_cf_options_.max_bytes_for_level_base = 900000000U;
// 6 L0 files, score 3.
Add(0, 1U, "000", "400", 1U);
Add(0, 2U, "001", "400", 1U, 0, 0);
Add(0, 3U, "001", "400", 1000000000U, 0, 0);
Add(0, 31U, "001", "400", 1000000000U, 0, 0);
Add(0, 32U, "001", "400", 1000000000U, 0, 0);
Add(0, 33U, "001", "400", 1000000000U, 0, 0);
// L1 score more than 6.
Add(1, 4U, "050", "300", 1000000000U, 0, 0);
file_map_[4u].first->being_compacted = true;
Add(1, 5U, "301", "350", 1000000000U, 0, 0);
Add(1, 51U, "351", "400", 6000000000U, 0, 0);
// Output level overlaps with the beginning and the end of the chain
Add(2, 6U, "050", "100", 1U);
Add(2, 7U, "300", "400", 1U);
// If score in L1 is larger than L0, L1 compaction goes through despite
// there is pending L0 compaction.
UpdateVersionStorageInfo();
ASSERT_EQ(1, vstorage_->CompactionScoreLevel(0));
ASSERT_EQ(0, vstorage_->CompactionScoreLevel(1));
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
}
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded1) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = false;
mutable_cf_options_.level0_file_num_compaction_trigger = 4;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200", 200);
Add(0, 2U, "150", "200", 200);
Add(0, 3U, "150", "200", 200);
// Level 1 is over target by 200
Add(1, 4U, "400", "500", 600);
Add(1, 5U, "600", "700", 600);
// Level 2 is less than target 10000 even added size of level 1
// Size ratio of L2/L1 is 9600 / 1200 = 8
Add(2, 6U, "150", "200", 2500);
Add(2, 7U, "201", "210", 2000);
Add(2, 8U, "300", "310", 2600);
Add(2, 9U, "400", "500", 2500);
// Level 3 exceeds target 100,000 of 1000
Add(3, 10U, "400", "500", 101000);
// Level 4 exceeds target 1,000,000 by 900 after adding size from level 3
// Size ratio L4/L3 is 9.9
// After merge from L3, L4 size is 1000900
Add(4, 11U, "400", "500", 999900);
Add(5, 11U, "400", "500", 8007200);
UpdateVersionStorageInfo();
ASSERT_EQ(200u * 9u + 10900u + 900u * 9,
vstorage_->estimated_compaction_needed_bytes());
}
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded2) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = false;
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200", 200);
Add(0, 2U, "150", "200", 200);
Add(0, 4U, "150", "200", 200);
Add(0, 5U, "150", "200", 200);
Add(0, 6U, "150", "200", 200);
// Level 1 size will be 1400 after merging with L0
Add(1, 7U, "400", "500", 200);
Add(1, 8U, "600", "700", 200);
// Level 2 is less than target 10000 even added size of level 1
Add(2, 9U, "150", "200", 9100);
// Level 3 over the target, but since level 4 is empty, we assume it will be
// a trivial move.
Add(3, 10U, "400", "500", 101000);
UpdateVersionStorageInfo();
// estimated L1->L2 merge: 400 * (9100.0 / 1400.0 + 1.0)
ASSERT_EQ(1400u + 3000u, vstorage_->estimated_compaction_needed_bytes());
}
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeeded3) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = false;
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
Add(0, 1U, "150", "200", 2000);
Add(0, 2U, "150", "200", 2000);
Add(0, 4U, "150", "200", 2000);
Add(0, 5U, "150", "200", 2000);
Add(0, 6U, "150", "200", 1000);
// Level 1 size will be 10000 after merging with L0
Add(1, 7U, "400", "500", 500);
Add(1, 8U, "600", "700", 500);
Add(2, 9U, "150", "200", 10000);
UpdateVersionStorageInfo();
ASSERT_EQ(10000u + 18000u, vstorage_->estimated_compaction_needed_bytes());
}
TEST_F(CompactionPickerTest, EstimateCompactionBytesNeededDynamicLevel) {
int num_levels = ioptions_.num_levels;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
NewVersionStorage(num_levels, kCompactionStyleLevel);
// Set Last level size 50000
// num_levels - 1 target 5000
// num_levels - 2 is base level with target 1000 (rounded up to
// max_bytes_for_level_base).
Add(num_levels - 1, 10U, "400", "500", 50000);
Add(0, 1U, "150", "200", 200);
Add(0, 2U, "150", "200", 200);
Add(0, 4U, "150", "200", 200);
Add(0, 5U, "150", "200", 200);
Add(0, 6U, "150", "200", 200);
// num_levels - 3 is over target by 100 + 1000
Add(num_levels - 3, 7U, "400", "500", 550);
Add(num_levels - 3, 8U, "600", "700", 550);
// num_levels - 2 is over target by 1100 + 200
Add(num_levels - 2, 9U, "150", "200", 5200);
UpdateVersionStorageInfo();
// Merging to the second last level: (5200 / 2100 + 1) * 1100
// Merging to the last level: (50000 / 6300 + 1) * 1300
ASSERT_EQ(2100u + 3823u + 11617u,
vstorage_->estimated_compaction_needed_bytes());
}
TEST_F(CompactionPickerTest, IsBottommostLevelTest) {
// case 1: Higher levels are empty
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "a", "m");
Add(0, 2U, "c", "z");
Add(1, 3U, "d", "e");
Add(1, 4U, "l", "p");
Add(2, 5U, "g", "i");
Add(2, 6U, "x", "z");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 1);
AddToCompactionFiles(3U);
AddToCompactionFiles(5U);
bool result =
Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_TRUE(result);
// case 2: Higher levels have no overlap
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "a", "m");
Add(0, 2U, "c", "z");
Add(1, 3U, "d", "e");
Add(1, 4U, "l", "p");
Add(2, 5U, "g", "i");
Add(2, 6U, "x", "z");
Add(3, 7U, "k", "p");
Add(3, 8U, "t", "w");
Add(4, 9U, "a", "b");
Add(5, 10U, "c", "cc");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 1);
AddToCompactionFiles(3U);
AddToCompactionFiles(5U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_TRUE(result);
// case 3.1: Higher levels (level 3) have overlap
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "a", "m");
Add(0, 2U, "c", "z");
Add(1, 3U, "d", "e");
Add(1, 4U, "l", "p");
Add(2, 5U, "g", "i");
Add(2, 6U, "x", "z");
Add(3, 7U, "e", "g");
Add(3, 8U, "h", "k");
Add(4, 9U, "a", "b");
Add(5, 10U, "c", "cc");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 1);
AddToCompactionFiles(3U);
AddToCompactionFiles(5U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_FALSE(result);
// case 3.2: Higher levels (level 5) have overlap
DeleteVersionStorage();
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "a", "m");
Add(0, 2U, "c", "z");
Add(1, 3U, "d", "e");
Add(1, 4U, "l", "p");
Add(2, 5U, "g", "i");
Add(2, 6U, "x", "z");
Add(3, 7U, "j", "k");
Add(3, 8U, "l", "m");
Add(4, 9U, "a", "b");
Add(5, 10U, "c", "cc");
Add(5, 11U, "h", "k");
Add(5, 12U, "y", "yy");
Add(5, 13U, "z", "zz");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 1);
AddToCompactionFiles(3U);
AddToCompactionFiles(5U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_FALSE(result);
// case 3.3: Higher levels (level 5) have overlap, but it's only overlapping
// one key ("d")
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "a", "m");
Add(0, 2U, "c", "z");
Add(1, 3U, "d", "e");
Add(1, 4U, "l", "p");
Add(2, 5U, "g", "i");
Add(2, 6U, "x", "z");
Add(3, 7U, "j", "k");
Add(3, 8U, "l", "m");
Add(4, 9U, "a", "b");
Add(5, 10U, "c", "cc");
Add(5, 11U, "ccc", "d");
Add(5, 12U, "y", "yy");
Add(5, 13U, "z", "zz");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 1);
AddToCompactionFiles(3U);
AddToCompactionFiles(5U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_FALSE(result);
// Level 0 files overlap
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "s", "t");
Add(0, 2U, "a", "m");
Add(0, 3U, "b", "z");
Add(0, 4U, "e", "f");
Add(5, 10U, "y", "z");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(1, 0);
AddToCompactionFiles(1U);
AddToCompactionFiles(2U);
AddToCompactionFiles(3U);
AddToCompactionFiles(4U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_FALSE(result);
// Level 0 files don't overlap
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "s", "t");
Add(0, 2U, "a", "m");
Add(0, 3U, "b", "k");
Add(0, 4U, "e", "f");
Add(5, 10U, "y", "z");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(1, 0);
AddToCompactionFiles(1U);
AddToCompactionFiles(2U);
AddToCompactionFiles(3U);
AddToCompactionFiles(4U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_TRUE(result);
// Level 1 files overlap
NewVersionStorage(6, kCompactionStyleLevel);
Add(0, 1U, "s", "t");
Add(0, 2U, "a", "m");
Add(0, 3U, "b", "k");
Add(0, 4U, "e", "f");
Add(1, 5U, "a", "m");
Add(1, 6U, "n", "o");
Add(1, 7U, "w", "y");
Add(5, 10U, "y", "z");
UpdateVersionStorageInfo();
SetCompactionInputFilesLevels(2, 0);
AddToCompactionFiles(1U);
AddToCompactionFiles(2U);
AddToCompactionFiles(3U);
AddToCompactionFiles(4U);
AddToCompactionFiles(5U);
AddToCompactionFiles(6U);
AddToCompactionFiles(7U);
result = Compaction::TEST_IsBottommostLevel(2, vstorage_.get(), input_files_);
ASSERT_FALSE(result);
DeleteVersionStorage();
}
TEST_F(CompactionPickerTest, MaxCompactionBytesHit) {
mutable_cf_options_.max_bytes_for_level_base = 1000000u;
mutable_cf_options_.max_compaction_bytes = 800000u;
ioptions_.level_compaction_dynamic_level_bytes = false;
NewVersionStorage(6, kCompactionStyleLevel);
// A compaction should be triggered and pick file 2 and 5.
// It can expand because adding file 1 and 3, the compaction size will
// exceed mutable_cf_options_.max_bytes_for_level_base.
Add(1, 1U, "100", "150", 300000U);
Add(1, 2U, "151", "200", 300001U, 0, 0);
Add(1, 3U, "201", "250", 300000U, 0, 0);
Add(1, 4U, "251", "300", 300000U, 0, 0);
Add(2, 5U, "100", "256", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->num_input_files(1));
ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, MaxCompactionBytesNotHit) {
mutable_cf_options_.max_bytes_for_level_base = 800000u;
mutable_cf_options_.max_compaction_bytes = 1000000u;
ioptions_.level_compaction_dynamic_level_bytes = false;
NewVersionStorage(6, kCompactionStyleLevel);
// A compaction should be triggered and pick file 2 and 5.
// and it expands to file 1 and 3 too.
Add(1, 1U, "100", "150", 300000U);
Add(1, 2U, "151", "200", 300001U, 0, 0);
Add(1, 3U, "201", "250", 300000U, 0, 0);
Add(1, 4U, "251", "300", 300000U, 0, 0);
Add(2, 5U, "000", "251", 1U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(2U, compaction->num_input_levels());
ASSERT_EQ(3U, compaction->num_input_files(0));
ASSERT_EQ(1U, compaction->num_input_files(1));
ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
}
TEST_F(CompactionPickerTest, IsTrivialMoveOn) {
mutable_cf_options_.max_bytes_for_level_base = 10000u;
mutable_cf_options_.max_compaction_bytes = 10001u;
ioptions_.level_compaction_dynamic_level_bytes = false;
NewVersionStorage(6, kCompactionStyleLevel);
// A compaction should be triggered and pick file 2
Add(1, 1U, "100", "150", 3000U);
Add(1, 2U, "151", "200", 3001U);
Add(1, 3U, "201", "250", 3000U);
Add(1, 4U, "251", "300", 3000U);
Add(3, 5U, "120", "130", 7000U);
Add(3, 6U, "170", "180", 7000U);
Add(3, 5U, "220", "230", 7000U);
Add(3, 5U, "270", "280", 7000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_TRUE(compaction->IsTrivialMove());
}
TEST_F(CompactionPickerTest, IsTrivialMoveOff) {
mutable_cf_options_.max_bytes_for_level_base = 1000000u;
mutable_cf_options_.max_compaction_bytes = 10000u;
ioptions_.level_compaction_dynamic_level_bytes = false;
NewVersionStorage(6, kCompactionStyleLevel);
// A compaction should be triggered and pick all files from level 1
Add(1, 1U, "100", "150", 300000U, 0, 0);
Add(1, 2U, "150", "200", 300000U, 0, 0);
Add(1, 3U, "200", "250", 300000U, 0, 0);
Add(1, 4U, "250", "300", 300000U, 0, 0);
Add(3, 5U, "120", "130", 6000U);
Add(3, 6U, "140", "150", 6000U);
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_FALSE(compaction->IsTrivialMove());
}
TEST_F(CompactionPickerTest, CacheNextCompactionIndex) {
NewVersionStorage(6, kCompactionStyleLevel);
mutable_cf_options_.max_compaction_bytes = 100000000000u;
Add(1 /* level */, 1U /* file_number */, "100" /* smallest */,
"149" /* largest */, 1000000000U /* file_size */);
file_map_[1U].first->being_compacted = true;
Add(1 /* level */, 2U /* file_number */, "150" /* smallest */,
"199" /* largest */, 900000000U /* file_size */);
Add(1 /* level */, 3U /* file_number */, "200" /* smallest */,
"249" /* largest */, 800000000U /* file_size */);
Add(1 /* level */, 4U /* file_number */, "250" /* smallest */,
"299" /* largest */, 700000000U /* file_size */);
Add(2 /* level */, 5U /* file_number */, "150" /* smallest */,
"199" /* largest */, 1U /* file_size */);
file_map_[5U].first->being_compacted = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(0U, compaction->num_input_files(1));
ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(2, vstorage_->NextCompactionIndex(1 /* level */));
compaction.reset(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(1U, compaction->num_input_files(0));
ASSERT_EQ(0U, compaction->num_input_files(1));
ASSERT_EQ(4U, compaction->input(0, 0)->fd.GetNumber());
ASSERT_EQ(3, vstorage_->NextCompactionIndex(1 /* level */));
compaction.reset(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() == nullptr);
ASSERT_EQ(4, vstorage_->NextCompactionIndex(1 /* level */));
}
TEST_F(CompactionPickerTest, IntraL0MaxCompactionBytesNotHit) {
// Intra L0 compaction triggers only if there are at least
// level0_file_num_compaction_trigger + 2 L0 files.
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
mutable_cf_options_.max_compaction_bytes = 1000000u;
NewVersionStorage(6, kCompactionStyleLevel);
// All 5 L0 files will be picked for intra L0 compaction. The one L1 file
// spans entire L0 key range and is marked as being compacted to avoid
// L0->L1 compaction.
Add(0, 1U, "100", "150", 200000U);
Add(0, 2U, "151", "200", 200000U);
Add(0, 3U, "201", "250", 200000U);
Add(0, 4U, "251", "300", 200000U);
Add(0, 5U, "301", "350", 200000U);
Add(1, 6U, "100", "350", 200000U);
vstorage_->LevelFiles(1)[0]->being_compacted = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(5U, compaction->num_input_files(0));
ASSERT_EQ(CompactionReason::kLevelL0FilesNum,
compaction->compaction_reason());
ASSERT_EQ(0, compaction->output_level());
}
TEST_F(CompactionPickerTest, IntraL0MaxCompactionBytesHit) {
// Intra L0 compaction triggers only if there are at least
// level0_file_num_compaction_trigger + 2 L0 files.
mutable_cf_options_.level0_file_num_compaction_trigger = 3;
mutable_cf_options_.max_compaction_bytes = 999999u;
NewVersionStorage(6, kCompactionStyleLevel);
// 4 out of 5 L0 files will be picked for intra L0 compaction due to
// max_compaction_bytes limit (the minimum number of files for triggering
// intra L0 compaction is 4). The one L1 file spans entire L0 key range and
// is marked as being compacted to avoid L0->L1 compaction.
Add(0, 1U, "100", "150", 200000U);
Add(0, 2U, "151", "200", 200000U);
Add(0, 3U, "201", "250", 200000U);
Add(0, 4U, "251", "300", 200000U);
Add(0, 5U, "301", "350", 200000U);
Add(1, 6U, "100", "350", 200000U);
vstorage_->LevelFiles(1)[0]->being_compacted = true;
UpdateVersionStorageInfo();
std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
ASSERT_TRUE(compaction.get() != nullptr);
ASSERT_EQ(1U, compaction->num_input_levels());
ASSERT_EQ(4U, compaction->num_input_files(0));
ASSERT_EQ(CompactionReason::kLevelL0FilesNum,
compaction->compaction_reason());
ASSERT_EQ(0, compaction->output_level());
}
} // namespace rocksdb
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}