// 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 "db/compaction_picker.h" #include #include #include #include "db/compaction.h" #include "db/compaction_picker_universal.h" #include "util/logging.h" #include "util/string_util.h" #include "util/testharness.h" #include "util/testutil.h" namespace rocksdb { class CountingLogger : public Logger { public: using Logger::Logv; virtual 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 vstorage_; std::vector> files_; // does not own FileMetaData std::unordered_map> file_map_; // input files to compaction process. std::vector 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) { fifo_options_.max_table_files_size = 1; mutable_cf_options_.RefreshDerivedOptions(ioptions_); ioptions_.db_paths.emplace_back("dummy", std::numeric_limits::max()); } ~CompactionPickerTest() { } 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) { assert(level < vstorage_->num_levels()); FileMetaData* f = new FileMetaData; f->fd = FileDescriptor(file_number, path_id, file_size); f->smallest = InternalKey(smallest, smallest_seq, kTypeValue); f->largest = InternalKey(largest, largest_seq, kTypeValue); f->smallest_seqno = smallest_seq; f->largest_seqno = largest_seq; f->compensated_file_size = file_size; f->refs = 0; 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(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(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(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(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) { 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(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()); } TEST_F(CompactionPickerTest, LevelMaxScore) { NewVersionStorage(6, kCompactionStyleLevel); 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(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(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()); } 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(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(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(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(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(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(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(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(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(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_); // must return false when there's no files. ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()), false); UpdateVersionStorageInfo(); // 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_); // 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( 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; ioptions_.compaction_options_universal.allow_trivial_move = true; NewVersionStorage(1, kCompactionStyleUniversal); UniversalCompactionPicker universal_compaction_picker(ioptions_, &icmp_); // 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( 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; ioptions_.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( 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; ioptions_.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(level_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 = 10000000; mutable_cf_options_.target_file_size_multiplier = 10; mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024; 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(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()); } 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(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(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()); } // 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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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(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 */)); } } // namespace rocksdb int main(int argc, char** argv) { ::testing::InitGoogleTest(&argc, argv); return RUN_ALL_TESTS(); }