fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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438 lines
16 KiB
438 lines
16 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include <algorithm>
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#include <map>
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#include <string>
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#include "db/column_family.h"
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#include "db/flush_job.h"
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#include "db/version_set.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/write_buffer_manager.h"
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#include "table/mock_table.h"
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#include "util/file_reader_writer.h"
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#include "util/string_util.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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// TODO(icanadi) Mock out everything else:
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// 1. VersionSet
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// 2. Memtable
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class FlushJobTest : public testing::Test {
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public:
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FlushJobTest()
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: env_(Env::Default()),
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dbname_(test::PerThreadDBPath("flush_job_test")),
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options_(),
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db_options_(options_),
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column_family_names_({kDefaultColumnFamilyName, "foo", "bar"}),
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table_cache_(NewLRUCache(50000, 16)),
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write_buffer_manager_(db_options_.db_write_buffer_size),
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versions_(new VersionSet(dbname_, &db_options_, env_options_,
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table_cache_.get(), &write_buffer_manager_,
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&write_controller_)),
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shutting_down_(false),
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mock_table_factory_(new mock::MockTableFactory()) {
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EXPECT_OK(env_->CreateDirIfMissing(dbname_));
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db_options_.db_paths.emplace_back(dbname_,
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std::numeric_limits<uint64_t>::max());
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db_options_.statistics = rocksdb::CreateDBStatistics();
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// TODO(icanadi) Remove this once we mock out VersionSet
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NewDB();
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std::vector<ColumnFamilyDescriptor> column_families;
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cf_options_.table_factory = mock_table_factory_;
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for (const auto& cf_name : column_family_names_) {
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column_families.emplace_back(cf_name, cf_options_);
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}
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EXPECT_OK(versions_->Recover(column_families, false));
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}
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void NewDB() {
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VersionEdit new_db;
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new_db.SetLogNumber(0);
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new_db.SetNextFile(2);
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new_db.SetLastSequence(0);
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autovector<VersionEdit> new_cfs;
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SequenceNumber last_seq = 1;
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uint32_t cf_id = 1;
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for (size_t i = 1; i != column_family_names_.size(); ++i) {
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VersionEdit new_cf;
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new_cf.AddColumnFamily(column_family_names_[i]);
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new_cf.SetColumnFamily(cf_id++);
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new_cf.SetLogNumber(0);
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new_cf.SetNextFile(2);
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new_cf.SetLastSequence(last_seq++);
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new_cfs.emplace_back(new_cf);
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}
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const std::string manifest = DescriptorFileName(dbname_, 1);
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unique_ptr<WritableFile> file;
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Status s = env_->NewWritableFile(
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manifest, &file, env_->OptimizeForManifestWrite(env_options_));
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ASSERT_OK(s);
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unique_ptr<WritableFileWriter> file_writer(
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new WritableFileWriter(std::move(file), manifest, EnvOptions()));
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{
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log::Writer log(std::move(file_writer), 0, false);
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std::string record;
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new_db.EncodeTo(&record);
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s = log.AddRecord(record);
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for (const auto& e : new_cfs) {
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record.clear();
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e.EncodeTo(&record);
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s = log.AddRecord(record);
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ASSERT_OK(s);
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}
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}
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ASSERT_OK(s);
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// Make "CURRENT" file that points to the new manifest file.
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s = SetCurrentFile(env_, dbname_, 1, nullptr);
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}
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Env* env_;
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std::string dbname_;
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EnvOptions env_options_;
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Options options_;
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ImmutableDBOptions db_options_;
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const std::vector<std::string> column_family_names_;
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std::shared_ptr<Cache> table_cache_;
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WriteController write_controller_;
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WriteBufferManager write_buffer_manager_;
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ColumnFamilyOptions cf_options_;
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std::unique_ptr<VersionSet> versions_;
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InstrumentedMutex mutex_;
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std::atomic<bool> shutting_down_;
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std::shared_ptr<mock::MockTableFactory> mock_table_factory_;
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};
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TEST_F(FlushJobTest, Empty) {
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JobContext job_context(0);
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auto cfd = versions_->GetColumnFamilySet()->GetDefault();
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EventLogger event_logger(db_options_.info_log.get());
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SnapshotChecker* snapshot_checker = nullptr; // not relavant
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FlushJob flush_job(
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dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
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*cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
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env_options_, versions_.get(), &mutex_, &shutting_down_, {},
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kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
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nullptr, kNoCompression, nullptr, &event_logger, false,
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true /* sync_output_directory */, true /* write_manifest */);
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{
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InstrumentedMutexLock l(&mutex_);
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flush_job.PickMemTable();
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ASSERT_OK(flush_job.Run());
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}
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job_context.Clean();
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}
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TEST_F(FlushJobTest, NonEmpty) {
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JobContext job_context(0);
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auto cfd = versions_->GetColumnFamilySet()->GetDefault();
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auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
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kMaxSequenceNumber);
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new_mem->Ref();
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auto inserted_keys = mock::MakeMockFile();
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// Test data:
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// seqno [ 1, 2 ... 8998, 8999, 9000, 9001, 9002 ... 9999 ]
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// key [ 1001, 1002 ... 9998, 9999, 0, 1, 2 ... 999 ]
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// range-delete "9995" -> "9999" at seqno 10000
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for (int i = 1; i < 10000; ++i) {
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std::string key(ToString((i + 1000) % 10000));
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std::string value("value" + key);
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new_mem->Add(SequenceNumber(i), kTypeValue, key, value);
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if ((i + 1000) % 10000 < 9995) {
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InternalKey internal_key(key, SequenceNumber(i), kTypeValue);
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inserted_keys.insert({internal_key.Encode().ToString(), value});
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}
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}
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new_mem->Add(SequenceNumber(10000), kTypeRangeDeletion, "9995", "9999a");
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InternalKey internal_key("9995", SequenceNumber(10000), kTypeRangeDeletion);
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inserted_keys.insert({internal_key.Encode().ToString(), "9999a"});
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autovector<MemTable*> to_delete;
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cfd->imm()->Add(new_mem, &to_delete);
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for (auto& m : to_delete) {
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delete m;
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}
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EventLogger event_logger(db_options_.info_log.get());
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SnapshotChecker* snapshot_checker = nullptr; // not relavant
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FlushJob flush_job(
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dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
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*cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
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env_options_, versions_.get(), &mutex_, &shutting_down_, {},
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kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
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nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
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true, true /* sync_output_directory */, true /* write_manifest */);
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HistogramData hist;
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FileMetaData file_meta;
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mutex_.Lock();
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flush_job.PickMemTable();
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ASSERT_OK(flush_job.Run(nullptr, &file_meta));
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mutex_.Unlock();
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db_options_.statistics->histogramData(FLUSH_TIME, &hist);
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ASSERT_GT(hist.average, 0.0);
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ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
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ASSERT_EQ(
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"9999a",
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file_meta.largest.user_key().ToString()); // range tombstone end key
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ASSERT_EQ(1, file_meta.fd.smallest_seqno);
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ASSERT_EQ(10000, file_meta.fd.largest_seqno); // range tombstone seqnum 10000
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mock_table_factory_->AssertSingleFile(inserted_keys);
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job_context.Clean();
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}
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TEST_F(FlushJobTest, FlushMemTablesSingleColumnFamily) {
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const size_t num_mems = 2;
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const size_t num_mems_to_flush = 1;
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const size_t num_keys_per_table = 100;
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JobContext job_context(0);
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ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
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std::vector<uint64_t> memtable_ids;
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std::vector<MemTable*> new_mems;
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for (size_t i = 0; i != num_mems; ++i) {
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MemTable* mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
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kMaxSequenceNumber);
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mem->SetID(i);
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mem->Ref();
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new_mems.emplace_back(mem);
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memtable_ids.push_back(mem->GetID());
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for (size_t j = 0; j < num_keys_per_table; ++j) {
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std::string key(ToString(j + i * num_keys_per_table));
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std::string value("value" + key);
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mem->Add(SequenceNumber(j + i * num_keys_per_table), kTypeValue, key,
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value);
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}
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}
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autovector<MemTable*> to_delete;
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for (auto mem : new_mems) {
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cfd->imm()->Add(mem, &to_delete);
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}
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EventLogger event_logger(db_options_.info_log.get());
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SnapshotChecker* snapshot_checker = nullptr; // not relavant
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assert(memtable_ids.size() == num_mems);
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uint64_t smallest_memtable_id = memtable_ids.front();
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uint64_t flush_memtable_id = smallest_memtable_id + num_mems_to_flush - 1;
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FlushJob flush_job(
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dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
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*cfd->GetLatestMutableCFOptions(), &flush_memtable_id, env_options_,
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versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
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snapshot_checker, &job_context, nullptr, nullptr, nullptr, kNoCompression,
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db_options_.statistics.get(), &event_logger, true,
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true /* sync_output_directory */, true /* write_manifest */);
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HistogramData hist;
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FileMetaData file_meta;
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mutex_.Lock();
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flush_job.PickMemTable();
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ASSERT_OK(flush_job.Run(nullptr /* prep_tracker */, &file_meta));
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mutex_.Unlock();
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db_options_.statistics->histogramData(FLUSH_TIME, &hist);
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ASSERT_GT(hist.average, 0.0);
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ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
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ASSERT_EQ("99", file_meta.largest.user_key().ToString());
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ASSERT_EQ(0, file_meta.fd.smallest_seqno);
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ASSERT_EQ(SequenceNumber(num_mems_to_flush * num_keys_per_table - 1),
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file_meta.fd.largest_seqno);
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for (auto m : to_delete) {
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delete m;
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}
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to_delete.clear();
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job_context.Clean();
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}
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TEST_F(FlushJobTest, FlushMemtablesMultipleColumnFamilies) {
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autovector<ColumnFamilyData*> all_cfds;
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for (auto cfd : *versions_->GetColumnFamilySet()) {
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all_cfds.push_back(cfd);
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}
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const std::vector<size_t> num_memtables = {2, 1, 3};
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assert(num_memtables.size() == column_family_names_.size());
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const size_t num_keys_per_memtable = 1000;
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JobContext job_context(0);
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std::vector<uint64_t> memtable_ids;
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std::vector<SequenceNumber> smallest_seqs;
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std::vector<SequenceNumber> largest_seqs;
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autovector<MemTable*> to_delete;
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SequenceNumber curr_seqno = 0;
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size_t k = 0;
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for (auto cfd : all_cfds) {
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smallest_seqs.push_back(curr_seqno);
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for (size_t i = 0; i != num_memtables[k]; ++i) {
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MemTable* mem = cfd->ConstructNewMemtable(
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*cfd->GetLatestMutableCFOptions(), kMaxSequenceNumber);
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mem->SetID(i);
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mem->Ref();
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mem->TEST_AtomicFlushSequenceNumber() = 123;
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for (size_t j = 0; j != num_keys_per_memtable; ++j) {
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std::string key(ToString(j + i * num_keys_per_memtable));
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std::string value("value" + key);
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mem->Add(curr_seqno++, kTypeValue, key, value);
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}
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cfd->imm()->Add(mem, &to_delete);
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}
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largest_seqs.push_back(curr_seqno - 1);
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memtable_ids.push_back(num_memtables[k++] - 1);
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}
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EventLogger event_logger(db_options_.info_log.get());
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SnapshotChecker* snapshot_checker = nullptr; // not relevant
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std::vector<FlushJob> flush_jobs;
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k = 0;
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for (auto cfd : all_cfds) {
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std::vector<SequenceNumber> snapshot_seqs;
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flush_jobs.emplace_back(
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dbname_, cfd, db_options_, *cfd->GetLatestMutableCFOptions(),
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&memtable_ids[k], env_options_, versions_.get(), &mutex_,
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&shutting_down_, snapshot_seqs, kMaxSequenceNumber, snapshot_checker,
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&job_context, nullptr, nullptr, nullptr, kNoCompression,
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db_options_.statistics.get(), &event_logger, true,
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false /* sync_output_directory */, false /* write_manifest */);
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k++;
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}
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HistogramData hist;
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autovector<FileMetaData> file_metas;
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mutex_.Lock();
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for (auto& job : flush_jobs) {
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job.PickMemTable();
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}
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for (auto& job : flush_jobs) {
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FileMetaData meta;
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// Run will release and re-acquire mutex
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ASSERT_OK(job.Run(nullptr /**/, &meta));
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file_metas.emplace_back(meta);
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}
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autovector<const autovector<MemTable*>*> mems_list;
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for (size_t i = 0; i != all_cfds.size(); ++i) {
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const auto& mems = flush_jobs[i].GetMemTables();
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mems_list.push_back(&mems);
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}
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autovector<MemTableList*> imm_lists;
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autovector<const MutableCFOptions*> mutable_cf_options_list;
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for (auto cfd : all_cfds) {
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imm_lists.push_back(cfd->imm());
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mutable_cf_options_list.push_back(cfd->GetLatestMutableCFOptions());
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}
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bool atomic_flush_commit_in_progress = false;
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Status s = MemTableList::TryInstallMemtableFlushResults(
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imm_lists, all_cfds, mutable_cf_options_list, mems_list,
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&atomic_flush_commit_in_progress, nullptr /* logs_prep_tracker */,
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versions_.get(), &mutex_, file_metas, &job_context.memtables_to_free,
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nullptr /* db_directory */, nullptr /* log_buffer */);
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ASSERT_OK(s);
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mutex_.Unlock();
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db_options_.statistics->histogramData(FLUSH_TIME, &hist);
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ASSERT_GT(hist.average, 0.0);
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k = 0;
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for (const auto& file_meta : file_metas) {
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ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
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ASSERT_EQ("999", file_meta.largest.user_key()
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.ToString()); // max key by bytewise comparator
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ASSERT_EQ(smallest_seqs[k], file_meta.fd.smallest_seqno);
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ASSERT_EQ(largest_seqs[k], file_meta.fd.largest_seqno);
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// Verify that imm is empty
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ASSERT_EQ(std::numeric_limits<uint64_t>::max(),
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all_cfds[k]->imm()->GetEarliestMemTableID());
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ASSERT_EQ(0, all_cfds[k]->imm()->GetLatestMemTableID());
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++k;
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}
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for (auto m : to_delete) {
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delete m;
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}
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to_delete.clear();
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job_context.Clean();
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}
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TEST_F(FlushJobTest, Snapshots) {
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JobContext job_context(0);
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auto cfd = versions_->GetColumnFamilySet()->GetDefault();
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auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
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kMaxSequenceNumber);
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std::vector<SequenceNumber> snapshots;
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std::set<SequenceNumber> snapshots_set;
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int keys = 10000;
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int max_inserts_per_keys = 8;
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Random rnd(301);
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for (int i = 0; i < keys / 2; ++i) {
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snapshots.push_back(rnd.Uniform(keys * (max_inserts_per_keys / 2)) + 1);
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snapshots_set.insert(snapshots.back());
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}
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std::sort(snapshots.begin(), snapshots.end());
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new_mem->Ref();
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SequenceNumber current_seqno = 0;
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auto inserted_keys = mock::MakeMockFile();
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for (int i = 1; i < keys; ++i) {
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std::string key(ToString(i));
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int insertions = rnd.Uniform(max_inserts_per_keys);
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for (int j = 0; j < insertions; ++j) {
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std::string value(test::RandomHumanReadableString(&rnd, 10));
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auto seqno = ++current_seqno;
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new_mem->Add(SequenceNumber(seqno), kTypeValue, key, value);
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// a key is visible only if:
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// 1. it's the last one written (j == insertions - 1)
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// 2. there's a snapshot pointing at it
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bool visible = (j == insertions - 1) ||
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(snapshots_set.find(seqno) != snapshots_set.end());
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if (visible) {
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InternalKey internal_key(key, seqno, kTypeValue);
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inserted_keys.insert({internal_key.Encode().ToString(), value});
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}
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}
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}
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autovector<MemTable*> to_delete;
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cfd->imm()->Add(new_mem, &to_delete);
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for (auto& m : to_delete) {
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delete m;
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}
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EventLogger event_logger(db_options_.info_log.get());
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SnapshotChecker* snapshot_checker = nullptr; // not relavant
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FlushJob flush_job(
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dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
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*cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
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env_options_, versions_.get(), &mutex_, &shutting_down_, snapshots,
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kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
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nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
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true, true /* sync_output_directory */, true /* write_manifest */);
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mutex_.Lock();
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flush_job.PickMemTable();
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ASSERT_OK(flush_job.Run());
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mutex_.Unlock();
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mock_table_factory_->AssertSingleFile(inserted_keys);
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HistogramData hist;
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db_options_.statistics->histogramData(FLUSH_TIME, &hist);
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ASSERT_GT(hist.average, 0.0);
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job_context.Clean();
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}
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} // namespace rocksdb
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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