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-rw-r--r--src/rocksdb/db/flush_job_test.cc498
1 files changed, 498 insertions, 0 deletions
diff --git a/src/rocksdb/db/flush_job_test.cc b/src/rocksdb/db/flush_job_test.cc
new file mode 100644
index 000000000..b77a4a2a9
--- /dev/null
+++ b/src/rocksdb/db/flush_job_test.cc
@@ -0,0 +1,498 @@
+// 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 <algorithm>
+#include <array>
+#include <map>
+#include <string>
+
+#include "db/blob_index.h"
+#include "db/column_family.h"
+#include "db/db_impl/db_impl.h"
+#include "db/flush_job.h"
+#include "db/version_set.h"
+#include "file/writable_file_writer.h"
+#include "rocksdb/cache.h"
+#include "rocksdb/write_buffer_manager.h"
+#include "table/mock_table.h"
+#include "test_util/testharness.h"
+#include "test_util/testutil.h"
+#include "util/string_util.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+// TODO(icanadi) Mock out everything else:
+// 1. VersionSet
+// 2. Memtable
+class FlushJobTest : public testing::Test {
+ public:
+ FlushJobTest()
+ : env_(Env::Default()),
+ fs_(std::make_shared<LegacyFileSystemWrapper>(env_)),
+ dbname_(test::PerThreadDBPath("flush_job_test")),
+ options_(),
+ db_options_(options_),
+ column_family_names_({kDefaultColumnFamilyName, "foo", "bar"}),
+ table_cache_(NewLRUCache(50000, 16)),
+ write_buffer_manager_(db_options_.db_write_buffer_size),
+ shutting_down_(false),
+ mock_table_factory_(new mock::MockTableFactory()) {
+ EXPECT_OK(env_->CreateDirIfMissing(dbname_));
+ db_options_.db_paths.emplace_back(dbname_,
+ std::numeric_limits<uint64_t>::max());
+ db_options_.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
+ // TODO(icanadi) Remove this once we mock out VersionSet
+ NewDB();
+ std::vector<ColumnFamilyDescriptor> column_families;
+ cf_options_.table_factory = mock_table_factory_;
+ for (const auto& cf_name : column_family_names_) {
+ column_families.emplace_back(cf_name, cf_options_);
+ }
+
+ db_options_.env = env_;
+ db_options_.fs = fs_;
+ versions_.reset(new VersionSet(dbname_, &db_options_, env_options_,
+ table_cache_.get(), &write_buffer_manager_,
+ &write_controller_,
+ /*block_cache_tracer=*/nullptr));
+ EXPECT_OK(versions_->Recover(column_families, false));
+ }
+
+ void NewDB() {
+ SetIdentityFile(env_, dbname_);
+ VersionEdit new_db;
+ if (db_options_.write_dbid_to_manifest) {
+ DBImpl* impl = new DBImpl(DBOptions(), dbname_);
+ std::string db_id;
+ impl->GetDbIdentityFromIdentityFile(&db_id);
+ new_db.SetDBId(db_id);
+ }
+ new_db.SetLogNumber(0);
+ new_db.SetNextFile(2);
+ new_db.SetLastSequence(0);
+
+ autovector<VersionEdit> new_cfs;
+ SequenceNumber last_seq = 1;
+ uint32_t cf_id = 1;
+ for (size_t i = 1; i != column_family_names_.size(); ++i) {
+ VersionEdit new_cf;
+ new_cf.AddColumnFamily(column_family_names_[i]);
+ new_cf.SetColumnFamily(cf_id++);
+ new_cf.SetLogNumber(0);
+ new_cf.SetNextFile(2);
+ new_cf.SetLastSequence(last_seq++);
+ new_cfs.emplace_back(new_cf);
+ }
+
+ const std::string manifest = DescriptorFileName(dbname_, 1);
+ std::unique_ptr<WritableFile> file;
+ Status s = env_->NewWritableFile(
+ manifest, &file, env_->OptimizeForManifestWrite(env_options_));
+ ASSERT_OK(s);
+ std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
+ NewLegacyWritableFileWrapper(std::move(file)), manifest, EnvOptions()));
+ {
+ log::Writer log(std::move(file_writer), 0, false);
+ std::string record;
+ new_db.EncodeTo(&record);
+ s = log.AddRecord(record);
+
+ for (const auto& e : new_cfs) {
+ record.clear();
+ e.EncodeTo(&record);
+ s = log.AddRecord(record);
+ ASSERT_OK(s);
+ }
+ }
+ ASSERT_OK(s);
+ // Make "CURRENT" file that points to the new manifest file.
+ s = SetCurrentFile(env_, dbname_, 1, nullptr);
+ }
+
+ Env* env_;
+ std::shared_ptr<FileSystem> fs_;
+ std::string dbname_;
+ EnvOptions env_options_;
+ Options options_;
+ ImmutableDBOptions db_options_;
+ const std::vector<std::string> column_family_names_;
+ std::shared_ptr<Cache> table_cache_;
+ WriteController write_controller_;
+ WriteBufferManager write_buffer_manager_;
+ ColumnFamilyOptions cf_options_;
+ std::unique_ptr<VersionSet> versions_;
+ InstrumentedMutex mutex_;
+ std::atomic<bool> shutting_down_;
+ std::shared_ptr<mock::MockTableFactory> mock_table_factory_;
+};
+
+TEST_F(FlushJobTest, Empty) {
+ JobContext job_context(0);
+ auto cfd = versions_->GetColumnFamilySet()->GetDefault();
+ EventLogger event_logger(db_options_.info_log.get());
+ SnapshotChecker* snapshot_checker = nullptr; // not relavant
+ FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
+ db_options_, *cfd->GetLatestMutableCFOptions(),
+ nullptr /* memtable_id */, env_options_, versions_.get(),
+ &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
+ snapshot_checker, &job_context, nullptr, nullptr, nullptr,
+ kNoCompression, nullptr, &event_logger, false,
+ true /* sync_output_directory */,
+ true /* write_manifest */, Env::Priority::USER);
+ {
+ InstrumentedMutexLock l(&mutex_);
+ flush_job.PickMemTable();
+ ASSERT_OK(flush_job.Run());
+ }
+ job_context.Clean();
+}
+
+TEST_F(FlushJobTest, NonEmpty) {
+ JobContext job_context(0);
+ auto cfd = versions_->GetColumnFamilySet()->GetDefault();
+ auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
+ kMaxSequenceNumber);
+ new_mem->Ref();
+ auto inserted_keys = mock::MakeMockFile();
+ // Test data:
+ // seqno [ 1, 2 ... 8998, 8999, 9000, 9001, 9002 ... 9999 ]
+ // key [ 1001, 1002 ... 9998, 9999, 0, 1, 2 ... 999 ]
+ // range-delete "9995" -> "9999" at seqno 10000
+ // blob references with seqnos 10001..10006
+ for (int i = 1; i < 10000; ++i) {
+ std::string key(ToString((i + 1000) % 10000));
+ std::string value("value" + key);
+ new_mem->Add(SequenceNumber(i), kTypeValue, key, value);
+ if ((i + 1000) % 10000 < 9995) {
+ InternalKey internal_key(key, SequenceNumber(i), kTypeValue);
+ inserted_keys.insert({internal_key.Encode().ToString(), value});
+ }
+ }
+
+ {
+ new_mem->Add(SequenceNumber(10000), kTypeRangeDeletion, "9995", "9999a");
+ InternalKey internal_key("9995", SequenceNumber(10000), kTypeRangeDeletion);
+ inserted_keys.insert({internal_key.Encode().ToString(), "9999a"});
+ }
+
+#ifndef ROCKSDB_LITE
+ // Note: the first two blob references will not be considered when resolving
+ // the oldest blob file referenced (the first one is inlined TTL, while the
+ // second one is TTL and thus points to a TTL blob file).
+ constexpr std::array<uint64_t, 6> blob_file_numbers{
+ kInvalidBlobFileNumber, 5, 103, 17, 102, 101};
+ for (size_t i = 0; i < blob_file_numbers.size(); ++i) {
+ std::string key(ToString(i + 10001));
+ std::string blob_index;
+ if (i == 0) {
+ BlobIndex::EncodeInlinedTTL(&blob_index, /* expiration */ 1234567890ULL,
+ "foo");
+ } else if (i == 1) {
+ BlobIndex::EncodeBlobTTL(&blob_index, /* expiration */ 1234567890ULL,
+ blob_file_numbers[i], /* offset */ i << 10,
+ /* size */ i << 20, kNoCompression);
+ } else {
+ BlobIndex::EncodeBlob(&blob_index, blob_file_numbers[i],
+ /* offset */ i << 10, /* size */ i << 20,
+ kNoCompression);
+ }
+
+ const SequenceNumber seq(i + 10001);
+ new_mem->Add(seq, kTypeBlobIndex, key, blob_index);
+
+ InternalKey internal_key(key, seq, kTypeBlobIndex);
+ inserted_keys.emplace_hint(inserted_keys.end(),
+ internal_key.Encode().ToString(), blob_index);
+ }
+#endif
+
+ autovector<MemTable*> to_delete;
+ cfd->imm()->Add(new_mem, &to_delete);
+ for (auto& m : to_delete) {
+ delete m;
+ }
+
+ EventLogger event_logger(db_options_.info_log.get());
+ SnapshotChecker* snapshot_checker = nullptr; // not relavant
+ FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
+ db_options_, *cfd->GetLatestMutableCFOptions(),
+ nullptr /* memtable_id */, env_options_, versions_.get(),
+ &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
+ snapshot_checker, &job_context, nullptr, nullptr, nullptr,
+ kNoCompression, db_options_.statistics.get(),
+ &event_logger, true, true /* sync_output_directory */,
+ true /* write_manifest */, Env::Priority::USER);
+
+ HistogramData hist;
+ FileMetaData file_meta;
+ mutex_.Lock();
+ flush_job.PickMemTable();
+ ASSERT_OK(flush_job.Run(nullptr, &file_meta));
+ mutex_.Unlock();
+ db_options_.statistics->histogramData(FLUSH_TIME, &hist);
+ ASSERT_GT(hist.average, 0.0);
+
+ ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
+ ASSERT_EQ("9999a", file_meta.largest.user_key().ToString());
+ ASSERT_EQ(1, file_meta.fd.smallest_seqno);
+#ifndef ROCKSDB_LITE
+ ASSERT_EQ(10006, file_meta.fd.largest_seqno);
+ ASSERT_EQ(17, file_meta.oldest_blob_file_number);
+#else
+ ASSERT_EQ(10000, file_meta.fd.largest_seqno);
+#endif
+ mock_table_factory_->AssertSingleFile(inserted_keys);
+ job_context.Clean();
+}
+
+TEST_F(FlushJobTest, FlushMemTablesSingleColumnFamily) {
+ const size_t num_mems = 2;
+ const size_t num_mems_to_flush = 1;
+ const size_t num_keys_per_table = 100;
+ JobContext job_context(0);
+ ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
+ std::vector<uint64_t> memtable_ids;
+ std::vector<MemTable*> new_mems;
+ for (size_t i = 0; i != num_mems; ++i) {
+ MemTable* mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
+ kMaxSequenceNumber);
+ mem->SetID(i);
+ mem->Ref();
+ new_mems.emplace_back(mem);
+ memtable_ids.push_back(mem->GetID());
+
+ for (size_t j = 0; j < num_keys_per_table; ++j) {
+ std::string key(ToString(j + i * num_keys_per_table));
+ std::string value("value" + key);
+ mem->Add(SequenceNumber(j + i * num_keys_per_table), kTypeValue, key,
+ value);
+ }
+ }
+
+ autovector<MemTable*> to_delete;
+ for (auto mem : new_mems) {
+ cfd->imm()->Add(mem, &to_delete);
+ }
+
+ EventLogger event_logger(db_options_.info_log.get());
+ SnapshotChecker* snapshot_checker = nullptr; // not relavant
+
+ assert(memtable_ids.size() == num_mems);
+ uint64_t smallest_memtable_id = memtable_ids.front();
+ uint64_t flush_memtable_id = smallest_memtable_id + num_mems_to_flush - 1;
+
+ FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
+ db_options_, *cfd->GetLatestMutableCFOptions(),
+ &flush_memtable_id, env_options_, versions_.get(), &mutex_,
+ &shutting_down_, {}, kMaxSequenceNumber, snapshot_checker,
+ &job_context, nullptr, nullptr, nullptr, kNoCompression,
+ db_options_.statistics.get(), &event_logger, true,
+ true /* sync_output_directory */,
+ true /* write_manifest */, Env::Priority::USER);
+ HistogramData hist;
+ FileMetaData file_meta;
+ mutex_.Lock();
+ flush_job.PickMemTable();
+ ASSERT_OK(flush_job.Run(nullptr /* prep_tracker */, &file_meta));
+ mutex_.Unlock();
+ db_options_.statistics->histogramData(FLUSH_TIME, &hist);
+ ASSERT_GT(hist.average, 0.0);
+
+ ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
+ ASSERT_EQ("99", file_meta.largest.user_key().ToString());
+ ASSERT_EQ(0, file_meta.fd.smallest_seqno);
+ ASSERT_EQ(SequenceNumber(num_mems_to_flush * num_keys_per_table - 1),
+ file_meta.fd.largest_seqno);
+ ASSERT_EQ(kInvalidBlobFileNumber, file_meta.oldest_blob_file_number);
+
+ for (auto m : to_delete) {
+ delete m;
+ }
+ to_delete.clear();
+ job_context.Clean();
+}
+
+TEST_F(FlushJobTest, FlushMemtablesMultipleColumnFamilies) {
+ autovector<ColumnFamilyData*> all_cfds;
+ for (auto cfd : *versions_->GetColumnFamilySet()) {
+ all_cfds.push_back(cfd);
+ }
+ const std::vector<size_t> num_memtables = {2, 1, 3};
+ assert(num_memtables.size() == column_family_names_.size());
+ const size_t num_keys_per_memtable = 1000;
+ JobContext job_context(0);
+ std::vector<uint64_t> memtable_ids;
+ std::vector<SequenceNumber> smallest_seqs;
+ std::vector<SequenceNumber> largest_seqs;
+ autovector<MemTable*> to_delete;
+ SequenceNumber curr_seqno = 0;
+ size_t k = 0;
+ for (auto cfd : all_cfds) {
+ smallest_seqs.push_back(curr_seqno);
+ for (size_t i = 0; i != num_memtables[k]; ++i) {
+ MemTable* mem = cfd->ConstructNewMemtable(
+ *cfd->GetLatestMutableCFOptions(), kMaxSequenceNumber);
+ mem->SetID(i);
+ mem->Ref();
+
+ for (size_t j = 0; j != num_keys_per_memtable; ++j) {
+ std::string key(ToString(j + i * num_keys_per_memtable));
+ std::string value("value" + key);
+ mem->Add(curr_seqno++, kTypeValue, key, value);
+ }
+
+ cfd->imm()->Add(mem, &to_delete);
+ }
+ largest_seqs.push_back(curr_seqno - 1);
+ memtable_ids.push_back(num_memtables[k++] - 1);
+ }
+
+ EventLogger event_logger(db_options_.info_log.get());
+ SnapshotChecker* snapshot_checker = nullptr; // not relevant
+ std::vector<std::unique_ptr<FlushJob>> flush_jobs;
+ k = 0;
+ for (auto cfd : all_cfds) {
+ std::vector<SequenceNumber> snapshot_seqs;
+ flush_jobs.emplace_back(new FlushJob(
+ dbname_, cfd, db_options_, *cfd->GetLatestMutableCFOptions(),
+ &memtable_ids[k], env_options_, versions_.get(), &mutex_,
+ &shutting_down_, snapshot_seqs, kMaxSequenceNumber, snapshot_checker,
+ &job_context, nullptr, nullptr, nullptr, kNoCompression,
+ db_options_.statistics.get(), &event_logger, true,
+ false /* sync_output_directory */, false /* write_manifest */,
+ Env::Priority::USER));
+ k++;
+ }
+ HistogramData hist;
+ std::vector<FileMetaData> file_metas;
+ // Call reserve to avoid auto-resizing
+ file_metas.reserve(flush_jobs.size());
+ mutex_.Lock();
+ for (auto& job : flush_jobs) {
+ job->PickMemTable();
+ }
+ for (auto& job : flush_jobs) {
+ FileMetaData meta;
+ // Run will release and re-acquire mutex
+ ASSERT_OK(job->Run(nullptr /**/, &meta));
+ file_metas.emplace_back(meta);
+ }
+ autovector<FileMetaData*> file_meta_ptrs;
+ for (auto& meta : file_metas) {
+ file_meta_ptrs.push_back(&meta);
+ }
+ autovector<const autovector<MemTable*>*> mems_list;
+ for (size_t i = 0; i != all_cfds.size(); ++i) {
+ const auto& mems = flush_jobs[i]->GetMemTables();
+ mems_list.push_back(&mems);
+ }
+ autovector<const MutableCFOptions*> mutable_cf_options_list;
+ for (auto cfd : all_cfds) {
+ mutable_cf_options_list.push_back(cfd->GetLatestMutableCFOptions());
+ }
+
+ Status s = InstallMemtableAtomicFlushResults(
+ nullptr /* imm_lists */, all_cfds, mutable_cf_options_list, mems_list,
+ versions_.get(), &mutex_, file_meta_ptrs, &job_context.memtables_to_free,
+ nullptr /* db_directory */, nullptr /* log_buffer */);
+ ASSERT_OK(s);
+
+ mutex_.Unlock();
+ db_options_.statistics->histogramData(FLUSH_TIME, &hist);
+ ASSERT_GT(hist.average, 0.0);
+ k = 0;
+ for (const auto& file_meta : file_metas) {
+ ASSERT_EQ(ToString(0), file_meta.smallest.user_key().ToString());
+ ASSERT_EQ("999", file_meta.largest.user_key()
+ .ToString()); // max key by bytewise comparator
+ ASSERT_EQ(smallest_seqs[k], file_meta.fd.smallest_seqno);
+ ASSERT_EQ(largest_seqs[k], file_meta.fd.largest_seqno);
+ // Verify that imm is empty
+ ASSERT_EQ(std::numeric_limits<uint64_t>::max(),
+ all_cfds[k]->imm()->GetEarliestMemTableID());
+ ASSERT_EQ(0, all_cfds[k]->imm()->GetLatestMemTableID());
+ ++k;
+ }
+
+ for (auto m : to_delete) {
+ delete m;
+ }
+ to_delete.clear();
+ job_context.Clean();
+}
+
+TEST_F(FlushJobTest, Snapshots) {
+ JobContext job_context(0);
+ auto cfd = versions_->GetColumnFamilySet()->GetDefault();
+ auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
+ kMaxSequenceNumber);
+
+ std::set<SequenceNumber> snapshots_set;
+ int keys = 10000;
+ int max_inserts_per_keys = 8;
+
+ Random rnd(301);
+ for (int i = 0; i < keys / 2; ++i) {
+ snapshots_set.insert(rnd.Uniform(keys * (max_inserts_per_keys / 2)) + 1);
+ }
+ // set has already removed the duplicate snapshots
+ std::vector<SequenceNumber> snapshots(snapshots_set.begin(),
+ snapshots_set.end());
+
+ new_mem->Ref();
+ SequenceNumber current_seqno = 0;
+ auto inserted_keys = mock::MakeMockFile();
+ for (int i = 1; i < keys; ++i) {
+ std::string key(ToString(i));
+ int insertions = rnd.Uniform(max_inserts_per_keys);
+ for (int j = 0; j < insertions; ++j) {
+ std::string value(test::RandomHumanReadableString(&rnd, 10));
+ auto seqno = ++current_seqno;
+ new_mem->Add(SequenceNumber(seqno), kTypeValue, key, value);
+ // a key is visible only if:
+ // 1. it's the last one written (j == insertions - 1)
+ // 2. there's a snapshot pointing at it
+ bool visible = (j == insertions - 1) ||
+ (snapshots_set.find(seqno) != snapshots_set.end());
+ if (visible) {
+ InternalKey internal_key(key, seqno, kTypeValue);
+ inserted_keys.insert({internal_key.Encode().ToString(), value});
+ }
+ }
+ }
+
+ autovector<MemTable*> to_delete;
+ cfd->imm()->Add(new_mem, &to_delete);
+ for (auto& m : to_delete) {
+ delete m;
+ }
+
+ EventLogger event_logger(db_options_.info_log.get());
+ SnapshotChecker* snapshot_checker = nullptr; // not relavant
+ FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
+ db_options_, *cfd->GetLatestMutableCFOptions(),
+ nullptr /* memtable_id */, env_options_, versions_.get(),
+ &mutex_, &shutting_down_, snapshots, kMaxSequenceNumber,
+ snapshot_checker, &job_context, nullptr, nullptr, nullptr,
+ kNoCompression, db_options_.statistics.get(),
+ &event_logger, true, true /* sync_output_directory */,
+ true /* write_manifest */, Env::Priority::USER);
+ mutex_.Lock();
+ flush_job.PickMemTable();
+ ASSERT_OK(flush_job.Run());
+ mutex_.Unlock();
+ mock_table_factory_->AssertSingleFile(inserted_keys);
+ HistogramData hist;
+ db_options_.statistics->histogramData(FLUSH_TIME, &hist);
+ ASSERT_GT(hist.average, 0.0);
+ job_context.Clean();
+}
+
+} // namespace ROCKSDB_NAMESPACE
+
+int main(int argc, char** argv) {
+ ::testing::InitGoogleTest(&argc, argv);
+ return RUN_ALL_TESTS();
+}
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