260 lines
9.3 KiB
C++
260 lines
9.3 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#include "db/compaction_picker.h"
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#include <limits>
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#include <string>
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#include "util/logging.h"
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#include "util/testharness.h"
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#include "util/testutil.h"
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namespace rocksdb {
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class CountingLogger : public Logger {
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public:
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using Logger::Logv;
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virtual void Logv(const char* format, va_list ap) override { log_count++; }
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size_t log_count;
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};
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class CompactionPickerTest {
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public:
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const Comparator* ucmp_;
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InternalKeyComparator icmp_;
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Options options_;
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ImmutableCFOptions ioptions_;
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MutableCFOptions mutable_cf_options_;
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LevelCompactionPicker level_compaction_picker;
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std::string cf_name_;
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CountingLogger logger_;
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LogBuffer log_buffer_;
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uint32_t file_num_;
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CompactionOptionsFIFO fifo_options_;
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std::unique_ptr<VersionStorageInfo> vstorage_;
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std::vector<std::unique_ptr<FileMetaData>> files_;
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CompactionPickerTest()
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: ucmp_(BytewiseComparator()),
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icmp_(ucmp_),
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ioptions_(options_),
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mutable_cf_options_(options_, ioptions_),
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level_compaction_picker(ioptions_, &icmp_),
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cf_name_("dummy"),
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log_buffer_(InfoLogLevel::INFO_LEVEL, &logger_),
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file_num_(1),
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vstorage_(nullptr) {
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fifo_options_.max_table_files_size = 1;
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mutable_cf_options_.RefreshDerivedOptions(ioptions_);
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ioptions_.db_paths.emplace_back("dummy",
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std::numeric_limits<uint64_t>::max());
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}
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~CompactionPickerTest() {
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}
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void NewVersionStorage(int num_levels, CompactionStyle style) {
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DeleteVersionStorage();
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options_.num_levels = num_levels;
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vstorage_.reset(new VersionStorageInfo(
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&icmp_, ucmp_, options_.num_levels, style, nullptr));
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}
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void DeleteVersionStorage() {
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vstorage_.reset();
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files_.clear();
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}
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void Add(int level, uint32_t file_number, const char* smallest,
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const char* largest, uint64_t file_size = 0, uint32_t path_id = 0,
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SequenceNumber smallest_seq = 100,
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SequenceNumber largest_seq = 100) {
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assert(level < vstorage_->num_levels());
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FileMetaData* f = new FileMetaData;
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f->fd = FileDescriptor(file_number, path_id, file_size);
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f->smallest = InternalKey(smallest, smallest_seq, kTypeValue);
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f->largest = InternalKey(largest, largest_seq, kTypeValue);
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f->compensated_file_size = file_size;
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f->refs = 0;
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vstorage_->AddFile(level, f);
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files_.emplace_back(f);
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}
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void UpdateVersionStorageInfo() {
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vstorage_->UpdateFilesBySize();
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vstorage_->UpdateNumNonEmptyLevels();
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vstorage_->GenerateFileIndexer();
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vstorage_->GenerateLevelFilesBrief();
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vstorage_->ComputeCompactionScore(mutable_cf_options_, fifo_options_);
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vstorage_->SetFinalized();
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}
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};
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TEST(CompactionPickerTest, Empty) {
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NewVersionStorage(6, kCompactionStyleLevel);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() == nullptr);
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}
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TEST(CompactionPickerTest, Single) {
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NewVersionStorage(6, kCompactionStyleLevel);
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mutable_cf_options_.level0_file_num_compaction_trigger = 2;
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Add(0, 1U, "p", "q");
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() == nullptr);
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}
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TEST(CompactionPickerTest, Level0Trigger) {
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NewVersionStorage(6, kCompactionStyleLevel);
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mutable_cf_options_.level0_file_num_compaction_trigger = 2;
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Add(0, 1U, "150", "200");
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Add(0, 2U, "200", "250");
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() != nullptr);
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ASSERT_EQ(2U, compaction->num_input_files(0));
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ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
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ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
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}
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TEST(CompactionPickerTest, Level1Trigger) {
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NewVersionStorage(6, kCompactionStyleLevel);
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Add(1, 66U, "150", "200", 1000000000U);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() != nullptr);
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ASSERT_EQ(1U, compaction->num_input_files(0));
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ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
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}
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TEST(CompactionPickerTest, Level1Trigger2) {
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NewVersionStorage(6, kCompactionStyleLevel);
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Add(1, 66U, "150", "200", 1000000001U);
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Add(1, 88U, "201", "300", 1000000000U);
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Add(2, 6U, "150", "179", 1000000000U);
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Add(2, 7U, "180", "220", 1000000000U);
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Add(2, 8U, "221", "300", 1000000000U);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() != nullptr);
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ASSERT_EQ(1U, compaction->num_input_files(0));
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ASSERT_EQ(2U, compaction->num_input_files(1));
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ASSERT_EQ(66U, compaction->input(0, 0)->fd.GetNumber());
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ASSERT_EQ(6U, compaction->input(1, 0)->fd.GetNumber());
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ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
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}
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TEST(CompactionPickerTest, LevelMaxScore) {
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NewVersionStorage(6, kCompactionStyleLevel);
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mutable_cf_options_.target_file_size_base = 10000000;
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mutable_cf_options_.target_file_size_multiplier = 10;
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Add(0, 1U, "150", "200", 1000000000U);
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// Level 1 score 1.2
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Add(1, 66U, "150", "200", 6000000U);
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Add(1, 88U, "201", "300", 6000000U);
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// Level 2 score 1.8. File 7 is the largest. Should be picked
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Add(2, 6U, "150", "179", 60000000U);
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Add(2, 7U, "180", "220", 60000001U);
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Add(2, 8U, "221", "300", 60000000U);
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// Level 3 score slightly larger than 1
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Add(3, 26U, "150", "170", 260000000U);
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Add(3, 27U, "171", "179", 260000000U);
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Add(3, 28U, "191", "220", 260000000U);
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Add(3, 29U, "221", "300", 260000000U);
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UpdateVersionStorageInfo();
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std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
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cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
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ASSERT_TRUE(compaction.get() != nullptr);
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ASSERT_EQ(1U, compaction->num_input_files(0));
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ASSERT_EQ(7U, compaction->input(0, 0)->fd.GetNumber());
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}
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TEST(CompactionPickerTest, NeedsCompactionLevel) {
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const int kLevels = 6;
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const int kFileCount = 20;
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for (int level = 0; level < kLevels - 1; ++level) {
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uint64_t file_size =
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mutable_cf_options_.MaxBytesForLevel(level) * 2 / kFileCount;
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for (int file_count = 1; file_count <= kFileCount; ++file_count) {
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// start a brand new version in each test.
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NewVersionStorage(kLevels, kCompactionStyleLevel);
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for (int i = 0; i < file_count; ++i) {
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Add(level, i, ToString((i + 100) * 1000).c_str(),
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ToString((i + 100) * 1000 + 999).c_str(),
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file_size, 0, i * 100, i * 100 + 99);
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}
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UpdateVersionStorageInfo();
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ASSERT_EQ(vstorage_->CompactionScoreLevel(0), level);
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ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
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vstorage_->CompactionScore(0) >= 1);
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// release the version storage
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DeleteVersionStorage();
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}
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}
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}
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TEST(CompactionPickerTest, NeedsCompactionUniversal) {
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NewVersionStorage(1, kCompactionStyleUniversal);
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UniversalCompactionPicker universal_compaction_picker(
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ioptions_, &icmp_);
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// must return false when there's no files.
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ASSERT_EQ(universal_compaction_picker.NeedsCompaction(vstorage_.get()),
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false);
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// verify the trigger given different number of L0 files.
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for (int i = 1;
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i <= mutable_cf_options_.level0_file_num_compaction_trigger * 2; ++i) {
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Add(0, i, ToString((i + 100) * 1000).c_str(),
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ToString((i + 100) * 1000 + 999).c_str(), 1000000, 0, i * 100,
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i * 100 + 99);
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ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
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vstorage_->CompactionScore(0) >= 1);
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}
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}
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TEST(CompactionPickerTest, NeedsCompactionFIFO) {
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NewVersionStorage(1, kCompactionStyleFIFO);
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const int kFileCount =
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mutable_cf_options_.level0_file_num_compaction_trigger * 3;
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const uint64_t kFileSize = 100000;
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const uint64_t kMaxSize = kFileSize * kFileCount / 2;
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fifo_options_.max_table_files_size = kMaxSize;
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ioptions_.compaction_options_fifo = fifo_options_;
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FIFOCompactionPicker fifo_compaction_picker(ioptions_, &icmp_);
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// must return false when there's no files.
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ASSERT_EQ(fifo_compaction_picker.NeedsCompaction(vstorage_.get()), false);
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// verify whether compaction is needed based on the current
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// size of L0 files.
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uint64_t current_size = 0;
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for (int i = 1; i <= kFileCount; ++i) {
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Add(0, i, ToString((i + 100) * 1000).c_str(),
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ToString((i + 100) * 1000 + 999).c_str(),
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kFileSize, 0, i * 100, i * 100 + 99);
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current_size += kFileSize;
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ASSERT_EQ(level_compaction_picker.NeedsCompaction(vstorage_.get()),
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vstorage_->CompactionScore(0) >= 1);
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}
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}
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} // namespace rocksdb
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int main(int argc, char** argv) { return rocksdb::test::RunAllTests(); }
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