Summary: Improving blob db FIFO eviction with the following changes, * Change blob_dir_size to max_db_size. Take into account SST file size when computing DB size. * FIFO now only take into account live sst files and live blob files. It is normal for disk usage to go over max_db_size because there are obsolete sst files and blob files pending deletion. * FIFO eviction now also evict TTL blob files that's still open. It doesn't evict non-TTL blob files. * If FIFO is triggered, it will pass an expiration and the current sequence number to compaction filter. Compaction filter will then filter inlined keys to evict those with an earlier expiration and smaller sequence number. So call LSM FIFO. * Compaction filter also filter those blob indexes where corresponding blob file is gone. * Add an event listener to listen compaction/flush event and update sst file size. * Implement DB::Close() to make sure base db, as well as event listener and compaction filter, destruct before blob db. * More blob db statistics around FIFO. * Fix some locking issue when accessing a blob file. Closes https://github.com/facebook/rocksdb/pull/3556 Differential Revision: D7139328 Pulled By: yiwu-arbug fbshipit-source-id: ea5edb07b33dfceacb2682f4789bea61de28bbfa
1533 lines
52 KiB
C++
1533 lines
52 KiB
C++
// 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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#ifndef ROCKSDB_LITE
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#include <algorithm>
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#include <cstdlib>
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "db/db_test_util.h"
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#include "port/port.h"
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#include "rocksdb/utilities/debug.h"
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#include "util/cast_util.h"
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#include "util/random.h"
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#include "util/string_util.h"
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#include "util/sync_point.h"
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#include "util/testharness.h"
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#include "utilities/blob_db/blob_db.h"
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#include "utilities/blob_db/blob_db_impl.h"
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#include "utilities/blob_db/blob_index.h"
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namespace rocksdb {
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namespace blob_db {
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class BlobDBTest : public testing::Test {
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public:
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const int kMaxBlobSize = 1 << 14;
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struct BlobRecord {
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std::string key;
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std::string value;
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uint64_t expiration = 0;
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};
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BlobDBTest()
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: dbname_(test::TmpDir() + "/blob_db_test"),
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mock_env_(new MockTimeEnv(Env::Default())),
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blob_db_(nullptr) {
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Status s = DestroyBlobDB(dbname_, Options(), BlobDBOptions());
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assert(s.ok());
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}
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~BlobDBTest() {
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SyncPoint::GetInstance()->ClearAllCallBacks();
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Destroy();
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}
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Status TryOpen(BlobDBOptions bdb_options = BlobDBOptions(),
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Options options = Options()) {
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options.create_if_missing = true;
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return BlobDB::Open(options, bdb_options, dbname_, &blob_db_);
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}
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void Open(BlobDBOptions bdb_options = BlobDBOptions(),
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Options options = Options()) {
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ASSERT_OK(TryOpen(bdb_options, options));
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}
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void Reopen(BlobDBOptions bdb_options = BlobDBOptions(),
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Options options = Options()) {
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assert(blob_db_ != nullptr);
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delete blob_db_;
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blob_db_ = nullptr;
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Open(bdb_options, options);
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}
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void Destroy() {
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if (blob_db_) {
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Options options = blob_db_->GetOptions();
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BlobDBOptions bdb_options = blob_db_->GetBlobDBOptions();
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delete blob_db_;
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blob_db_ = nullptr;
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ASSERT_OK(DestroyBlobDB(dbname_, options, bdb_options));
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}
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}
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BlobDBImpl *blob_db_impl() {
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return reinterpret_cast<BlobDBImpl *>(blob_db_);
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}
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Status Put(const Slice &key, const Slice &value,
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std::map<std::string, std::string> *data = nullptr) {
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Status s = blob_db_->Put(WriteOptions(), key, value);
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if (data != nullptr) {
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(*data)[key.ToString()] = value.ToString();
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}
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return s;
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}
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void Delete(const std::string &key,
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std::map<std::string, std::string> *data = nullptr) {
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ASSERT_OK(blob_db_->Delete(WriteOptions(), key));
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if (data != nullptr) {
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data->erase(key);
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}
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}
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Status PutWithTTL(const Slice &key, const Slice &value, uint64_t ttl,
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std::map<std::string, std::string> *data = nullptr) {
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Status s = blob_db_->PutWithTTL(WriteOptions(), key, value, ttl);
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if (data != nullptr) {
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(*data)[key.ToString()] = value.ToString();
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}
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return s;
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}
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Status PutUntil(const Slice &key, const Slice &value, uint64_t expiration) {
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return blob_db_->PutUntil(WriteOptions(), key, value, expiration);
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}
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void PutRandomWithTTL(const std::string &key, uint64_t ttl, Random *rnd,
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std::map<std::string, std::string> *data = nullptr) {
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int len = rnd->Next() % kMaxBlobSize + 1;
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std::string value = test::RandomHumanReadableString(rnd, len);
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ASSERT_OK(
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blob_db_->PutWithTTL(WriteOptions(), Slice(key), Slice(value), ttl));
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if (data != nullptr) {
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(*data)[key] = value;
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}
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}
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void PutRandomUntil(const std::string &key, uint64_t expiration, Random *rnd,
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std::map<std::string, std::string> *data = nullptr) {
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int len = rnd->Next() % kMaxBlobSize + 1;
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std::string value = test::RandomHumanReadableString(rnd, len);
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ASSERT_OK(blob_db_->PutUntil(WriteOptions(), Slice(key), Slice(value),
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expiration));
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if (data != nullptr) {
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(*data)[key] = value;
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}
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}
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void PutRandom(const std::string &key, Random *rnd,
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std::map<std::string, std::string> *data = nullptr) {
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PutRandom(blob_db_, key, rnd, data);
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}
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void PutRandom(DB *db, const std::string &key, Random *rnd,
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std::map<std::string, std::string> *data = nullptr) {
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int len = rnd->Next() % kMaxBlobSize + 1;
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std::string value = test::RandomHumanReadableString(rnd, len);
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ASSERT_OK(db->Put(WriteOptions(), Slice(key), Slice(value)));
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if (data != nullptr) {
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(*data)[key] = value;
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}
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}
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void PutRandomToWriteBatch(
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const std::string &key, Random *rnd, WriteBatch *batch,
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std::map<std::string, std::string> *data = nullptr) {
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int len = rnd->Next() % kMaxBlobSize + 1;
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std::string value = test::RandomHumanReadableString(rnd, len);
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ASSERT_OK(batch->Put(key, value));
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if (data != nullptr) {
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(*data)[key] = value;
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}
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}
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// Verify blob db contain expected data and nothing more.
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void VerifyDB(const std::map<std::string, std::string> &data) {
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VerifyDB(blob_db_, data);
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}
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void VerifyDB(DB *db, const std::map<std::string, std::string> &data) {
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// Verify normal Get
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auto* cfh = db->DefaultColumnFamily();
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for (auto &p : data) {
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PinnableSlice value_slice;
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ASSERT_OK(db->Get(ReadOptions(), cfh, p.first, &value_slice));
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ASSERT_EQ(p.second, value_slice.ToString());
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std::string value;
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ASSERT_OK(db->Get(ReadOptions(), cfh, p.first, &value));
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ASSERT_EQ(p.second, value);
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}
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// Verify iterators
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Iterator *iter = db->NewIterator(ReadOptions());
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iter->SeekToFirst();
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for (auto &p : data) {
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ASSERT_TRUE(iter->Valid());
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ASSERT_EQ(p.first, iter->key().ToString());
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ASSERT_EQ(p.second, iter->value().ToString());
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iter->Next();
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}
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ASSERT_FALSE(iter->Valid());
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ASSERT_OK(iter->status());
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delete iter;
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}
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void VerifyBaseDB(
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const std::map<std::string, KeyVersion> &expected_versions) {
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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DB *db = blob_db_->GetRootDB();
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std::vector<KeyVersion> versions;
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GetAllKeyVersions(db, "", "", &versions);
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ASSERT_EQ(expected_versions.size(), versions.size());
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size_t i = 0;
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for (auto &key_version : expected_versions) {
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const KeyVersion &expected_version = key_version.second;
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ASSERT_EQ(expected_version.user_key, versions[i].user_key);
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ASSERT_EQ(expected_version.sequence, versions[i].sequence);
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ASSERT_EQ(expected_version.type, versions[i].type);
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if (versions[i].type == kTypeValue) {
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ASSERT_EQ(expected_version.value, versions[i].value);
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} else {
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ASSERT_EQ(kTypeBlobIndex, versions[i].type);
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PinnableSlice value;
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ASSERT_OK(bdb_impl->TEST_GetBlobValue(versions[i].user_key,
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versions[i].value, &value));
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ASSERT_EQ(expected_version.value, value.ToString());
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}
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i++;
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}
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}
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void InsertBlobs() {
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WriteOptions wo;
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std::string value;
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Random rnd(301);
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for (size_t i = 0; i < 100000; i++) {
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uint64_t ttl = rnd.Next() % 86400;
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PutRandomWithTTL("key" + ToString(i % 500), ttl, &rnd, nullptr);
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}
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for (size_t i = 0; i < 10; i++) {
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Delete("key" + ToString(i % 500));
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}
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}
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const std::string dbname_;
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std::unique_ptr<MockTimeEnv> mock_env_;
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std::shared_ptr<TTLExtractor> ttl_extractor_;
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BlobDB *blob_db_;
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}; // class BlobDBTest
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TEST_F(BlobDBTest, Put) {
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Random rnd(301);
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BlobDBOptions bdb_options;
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bdb_options.min_blob_size = 0;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options);
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std::map<std::string, std::string> data;
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for (size_t i = 0; i < 100; i++) {
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PutRandom("key" + ToString(i), &rnd, &data);
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}
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VerifyDB(data);
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}
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TEST_F(BlobDBTest, PutWithTTL) {
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Random rnd(301);
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Options options;
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options.env = mock_env_.get();
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BlobDBOptions bdb_options;
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bdb_options.ttl_range_secs = 1000;
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bdb_options.min_blob_size = 0;
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bdb_options.blob_file_size = 256 * 1000 * 1000;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options, options);
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std::map<std::string, std::string> data;
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mock_env_->set_current_time(50);
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for (size_t i = 0; i < 100; i++) {
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uint64_t ttl = rnd.Next() % 100;
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PutRandomWithTTL("key" + ToString(i), ttl, &rnd,
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(ttl <= 50 ? nullptr : &data));
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}
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mock_env_->set_current_time(100);
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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auto blob_files = bdb_impl->TEST_GetBlobFiles();
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ASSERT_EQ(1, blob_files.size());
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ASSERT_TRUE(blob_files[0]->HasTTL());
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ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
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GCStats gc_stats;
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ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
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ASSERT_EQ(100 - data.size(), gc_stats.num_keys_expired);
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ASSERT_EQ(data.size(), gc_stats.num_keys_relocated);
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VerifyDB(data);
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}
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TEST_F(BlobDBTest, PutUntil) {
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Random rnd(301);
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Options options;
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options.env = mock_env_.get();
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BlobDBOptions bdb_options;
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bdb_options.ttl_range_secs = 1000;
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bdb_options.min_blob_size = 0;
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bdb_options.blob_file_size = 256 * 1000 * 1000;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options, options);
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std::map<std::string, std::string> data;
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mock_env_->set_current_time(50);
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for (size_t i = 0; i < 100; i++) {
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uint64_t expiration = rnd.Next() % 100 + 50;
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PutRandomUntil("key" + ToString(i), expiration, &rnd,
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(expiration <= 100 ? nullptr : &data));
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}
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mock_env_->set_current_time(100);
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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auto blob_files = bdb_impl->TEST_GetBlobFiles();
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ASSERT_EQ(1, blob_files.size());
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ASSERT_TRUE(blob_files[0]->HasTTL());
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ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
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GCStats gc_stats;
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ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
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ASSERT_EQ(100 - data.size(), gc_stats.num_keys_expired);
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ASSERT_EQ(data.size(), gc_stats.num_keys_relocated);
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VerifyDB(data);
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}
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TEST_F(BlobDBTest, TTLExtrator_NoTTL) {
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// The default ttl extractor return no ttl for every key.
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ttl_extractor_.reset(new TTLExtractor());
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Random rnd(301);
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Options options;
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options.env = mock_env_.get();
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BlobDBOptions bdb_options;
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bdb_options.ttl_range_secs = 1000;
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bdb_options.min_blob_size = 0;
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bdb_options.blob_file_size = 256 * 1000 * 1000;
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bdb_options.ttl_extractor = ttl_extractor_;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options, options);
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std::map<std::string, std::string> data;
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mock_env_->set_current_time(0);
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for (size_t i = 0; i < 100; i++) {
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PutRandom("key" + ToString(i), &rnd, &data);
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}
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// very far in the future..
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mock_env_->set_current_time(std::numeric_limits<uint64_t>::max() / 1000000 -
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10);
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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auto blob_files = bdb_impl->TEST_GetBlobFiles();
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ASSERT_EQ(1, blob_files.size());
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ASSERT_FALSE(blob_files[0]->HasTTL());
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ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
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GCStats gc_stats;
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ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
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ASSERT_EQ(0, gc_stats.num_keys_expired);
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ASSERT_EQ(100, gc_stats.num_keys_relocated);
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VerifyDB(data);
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}
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TEST_F(BlobDBTest, TTLExtractor_ExtractTTL) {
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Random rnd(301);
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class TestTTLExtractor : public TTLExtractor {
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public:
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explicit TestTTLExtractor(Random *r) : rnd(r) {}
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virtual bool ExtractTTL(const Slice &key, const Slice &value, uint64_t *ttl,
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std::string * /*new_value*/,
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bool * /*value_changed*/) override {
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*ttl = rnd->Next() % 100;
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if (*ttl > 50) {
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data[key.ToString()] = value.ToString();
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}
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return true;
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}
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Random *rnd;
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std::map<std::string, std::string> data;
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};
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ttl_extractor_.reset(new TestTTLExtractor(&rnd));
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Options options;
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options.env = mock_env_.get();
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BlobDBOptions bdb_options;
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bdb_options.ttl_range_secs = 1000;
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bdb_options.min_blob_size = 0;
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bdb_options.blob_file_size = 256 * 1000 * 1000;
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bdb_options.ttl_extractor = ttl_extractor_;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options, options);
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mock_env_->set_current_time(50);
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for (size_t i = 0; i < 100; i++) {
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PutRandom("key" + ToString(i), &rnd);
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}
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mock_env_->set_current_time(100);
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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auto blob_files = bdb_impl->TEST_GetBlobFiles();
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ASSERT_EQ(1, blob_files.size());
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ASSERT_TRUE(blob_files[0]->HasTTL());
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ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
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GCStats gc_stats;
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ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
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auto &data = static_cast<TestTTLExtractor *>(ttl_extractor_.get())->data;
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ASSERT_EQ(100 - data.size(), gc_stats.num_keys_expired);
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ASSERT_EQ(data.size(), gc_stats.num_keys_relocated);
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VerifyDB(data);
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}
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TEST_F(BlobDBTest, TTLExtractor_ExtractExpiration) {
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Random rnd(301);
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class TestTTLExtractor : public TTLExtractor {
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public:
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explicit TestTTLExtractor(Random *r) : rnd(r) {}
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virtual bool ExtractExpiration(const Slice &key, const Slice &value,
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uint64_t /*now*/, uint64_t *expiration,
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std::string * /*new_value*/,
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bool * /*value_changed*/) override {
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*expiration = rnd->Next() % 100 + 50;
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if (*expiration > 100) {
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data[key.ToString()] = value.ToString();
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}
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return true;
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}
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Random *rnd;
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std::map<std::string, std::string> data;
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};
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ttl_extractor_.reset(new TestTTLExtractor(&rnd));
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Options options;
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options.env = mock_env_.get();
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BlobDBOptions bdb_options;
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bdb_options.ttl_range_secs = 1000;
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bdb_options.min_blob_size = 0;
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bdb_options.blob_file_size = 256 * 1000 * 1000;
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bdb_options.ttl_extractor = ttl_extractor_;
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bdb_options.disable_background_tasks = true;
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Open(bdb_options, options);
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mock_env_->set_current_time(50);
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for (size_t i = 0; i < 100; i++) {
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PutRandom("key" + ToString(i), &rnd);
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}
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mock_env_->set_current_time(100);
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auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
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auto blob_files = bdb_impl->TEST_GetBlobFiles();
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ASSERT_EQ(1, blob_files.size());
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ASSERT_TRUE(blob_files[0]->HasTTL());
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ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
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GCStats gc_stats;
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ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
|
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auto &data = static_cast<TestTTLExtractor *>(ttl_extractor_.get())->data;
|
|
ASSERT_EQ(100 - data.size(), gc_stats.num_keys_expired);
|
|
ASSERT_EQ(data.size(), gc_stats.num_keys_relocated);
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, TTLExtractor_ChangeValue) {
|
|
class TestTTLExtractor : public TTLExtractor {
|
|
public:
|
|
const Slice kTTLSuffix = Slice("ttl:");
|
|
|
|
bool ExtractTTL(const Slice & /*key*/, const Slice &value, uint64_t *ttl,
|
|
std::string *new_value, bool *value_changed) override {
|
|
if (value.size() < 12) {
|
|
return false;
|
|
}
|
|
const char *p = value.data() + value.size() - 12;
|
|
if (kTTLSuffix != Slice(p, 4)) {
|
|
return false;
|
|
}
|
|
*ttl = DecodeFixed64(p + 4);
|
|
*new_value = Slice(value.data(), value.size() - 12).ToString();
|
|
*value_changed = true;
|
|
return true;
|
|
}
|
|
};
|
|
Random rnd(301);
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.ttl_range_secs = 1000;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.blob_file_size = 256 * 1000 * 1000;
|
|
bdb_options.ttl_extractor = std::make_shared<TestTTLExtractor>();
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options, options);
|
|
std::map<std::string, std::string> data;
|
|
mock_env_->set_current_time(50);
|
|
for (size_t i = 0; i < 100; i++) {
|
|
int len = rnd.Next() % kMaxBlobSize + 1;
|
|
std::string key = "key" + ToString(i);
|
|
std::string value = test::RandomHumanReadableString(&rnd, len);
|
|
uint64_t ttl = rnd.Next() % 100;
|
|
std::string value_ttl = value + "ttl:";
|
|
PutFixed64(&value_ttl, ttl);
|
|
ASSERT_OK(blob_db_->Put(WriteOptions(), Slice(key), Slice(value_ttl)));
|
|
if (ttl > 50) {
|
|
data[key] = value;
|
|
}
|
|
}
|
|
mock_env_->set_current_time(100);
|
|
auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
|
|
auto blob_files = bdb_impl->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_TRUE(blob_files[0]->HasTTL());
|
|
ASSERT_OK(bdb_impl->TEST_CloseBlobFile(blob_files[0]));
|
|
GCStats gc_stats;
|
|
ASSERT_OK(bdb_impl->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
|
|
ASSERT_EQ(100 - data.size(), gc_stats.num_keys_expired);
|
|
ASSERT_EQ(data.size(), gc_stats.num_keys_relocated);
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, StackableDBGet) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
for (size_t i = 0; i < 100; i++) {
|
|
StackableDB *db = blob_db_;
|
|
ColumnFamilyHandle *column_family = db->DefaultColumnFamily();
|
|
std::string key = "key" + ToString(i);
|
|
PinnableSlice pinnable_value;
|
|
ASSERT_OK(db->Get(ReadOptions(), column_family, key, &pinnable_value));
|
|
std::string string_value;
|
|
ASSERT_OK(db->Get(ReadOptions(), column_family, key, &string_value));
|
|
ASSERT_EQ(string_value, pinnable_value.ToString());
|
|
ASSERT_EQ(string_value, data[key]);
|
|
}
|
|
}
|
|
|
|
TEST_F(BlobDBTest, WriteBatch) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
WriteBatch batch;
|
|
for (size_t j = 0; j < 10; j++) {
|
|
PutRandomToWriteBatch("key" + ToString(j * 100 + i), &rnd, &batch, &data);
|
|
}
|
|
blob_db_->Write(WriteOptions(), &batch);
|
|
}
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, Delete) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
for (size_t i = 0; i < 100; i += 5) {
|
|
Delete("key" + ToString(i), &data);
|
|
}
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, DeleteBatch) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("key" + ToString(i), &rnd);
|
|
}
|
|
WriteBatch batch;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
batch.Delete("key" + ToString(i));
|
|
}
|
|
ASSERT_OK(blob_db_->Write(WriteOptions(), &batch));
|
|
// DB should be empty.
|
|
VerifyDB({});
|
|
}
|
|
|
|
TEST_F(BlobDBTest, Override) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (int i = 0; i < 10000; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, nullptr);
|
|
}
|
|
// override all the keys
|
|
for (int i = 0; i < 10000; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
VerifyDB(data);
|
|
}
|
|
|
|
#ifdef SNAPPY
|
|
TEST_F(BlobDBTest, Compression) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
bdb_options.compression = CompressionType::kSnappyCompression;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("put-key" + ToString(i), &rnd, &data);
|
|
}
|
|
for (int i = 0; i < 100; i++) {
|
|
WriteBatch batch;
|
|
for (size_t j = 0; j < 10; j++) {
|
|
PutRandomToWriteBatch("write-batch-key" + ToString(j * 100 + i), &rnd,
|
|
&batch, &data);
|
|
}
|
|
blob_db_->Write(WriteOptions(), &batch);
|
|
}
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, DecompressAfterReopen) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
bdb_options.compression = CompressionType::kSnappyCompression;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("put-key" + ToString(i), &rnd, &data);
|
|
}
|
|
VerifyDB(data);
|
|
bdb_options.compression = CompressionType::kNoCompression;
|
|
Reopen(bdb_options);
|
|
VerifyDB(data);
|
|
}
|
|
|
|
#endif
|
|
|
|
TEST_F(BlobDBTest, MultipleWriters) {
|
|
Open(BlobDBOptions());
|
|
|
|
std::vector<port::Thread> workers;
|
|
std::vector<std::map<std::string, std::string>> data_set(10);
|
|
for (uint32_t i = 0; i < 10; i++)
|
|
workers.push_back(port::Thread(
|
|
[&](uint32_t id) {
|
|
Random rnd(301 + id);
|
|
for (int j = 0; j < 100; j++) {
|
|
std::string key = "key" + ToString(id) + "_" + ToString(j);
|
|
if (id < 5) {
|
|
PutRandom(key, &rnd, &data_set[id]);
|
|
} else {
|
|
WriteBatch batch;
|
|
PutRandomToWriteBatch(key, &rnd, &batch, &data_set[id]);
|
|
blob_db_->Write(WriteOptions(), &batch);
|
|
}
|
|
}
|
|
},
|
|
i));
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 10; i++) {
|
|
workers[i].join();
|
|
data.insert(data_set[i].begin(), data_set[i].end());
|
|
}
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, GCAfterOverwriteKeys) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
DBImpl *db_impl = static_cast_with_check<DBImpl, DB>(blob_db_->GetBaseDB());
|
|
std::map<std::string, std::string> data;
|
|
for (int i = 0; i < 200; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[0]));
|
|
// Test for data in SST
|
|
size_t new_keys = 0;
|
|
for (int i = 0; i < 100; i++) {
|
|
if (rnd.Next() % 2 == 1) {
|
|
new_keys++;
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
}
|
|
db_impl->TEST_FlushMemTable(true /*wait*/);
|
|
// Test for data in memtable
|
|
for (int i = 100; i < 200; i++) {
|
|
if (rnd.Next() % 2 == 1) {
|
|
new_keys++;
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
}
|
|
GCStats gc_stats;
|
|
ASSERT_OK(blob_db_impl()->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
|
|
ASSERT_EQ(200, gc_stats.blob_count);
|
|
ASSERT_EQ(0, gc_stats.num_keys_expired);
|
|
ASSERT_EQ(200 - new_keys, gc_stats.num_keys_relocated);
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, GCRelocateKeyWhileOverwriting) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
ASSERT_OK(blob_db_->Put(WriteOptions(), "foo", "v1"));
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[0]));
|
|
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"BlobDBImpl::GCFileAndUpdateLSM:AfterGetFromBaseDB",
|
|
"BlobDBImpl::PutUntil:Start"},
|
|
{"BlobDBImpl::PutUntil:Finish",
|
|
"BlobDBImpl::GCFileAndUpdateLSM:BeforeRelocate"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
auto writer = port::Thread(
|
|
[this]() { ASSERT_OK(blob_db_->Put(WriteOptions(), "foo", "v2")); });
|
|
|
|
GCStats gc_stats;
|
|
ASSERT_OK(blob_db_impl()->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
|
|
ASSERT_EQ(1, gc_stats.blob_count);
|
|
ASSERT_EQ(0, gc_stats.num_keys_expired);
|
|
ASSERT_EQ(1, gc_stats.num_keys_overwritten);
|
|
ASSERT_EQ(0, gc_stats.num_keys_relocated);
|
|
writer.join();
|
|
VerifyDB({{"foo", "v2"}});
|
|
}
|
|
|
|
TEST_F(BlobDBTest, GCExpiredKeyWhileOverwriting) {
|
|
Random rnd(301);
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options, options);
|
|
mock_env_->set_current_time(100);
|
|
ASSERT_OK(blob_db_->PutUntil(WriteOptions(), "foo", "v1", 200));
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[0]));
|
|
mock_env_->set_current_time(300);
|
|
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"BlobDBImpl::GCFileAndUpdateLSM:AfterGetFromBaseDB",
|
|
"BlobDBImpl::PutUntil:Start"},
|
|
{"BlobDBImpl::PutUntil:Finish",
|
|
"BlobDBImpl::GCFileAndUpdateLSM:BeforeDelete"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
auto writer = port::Thread([this]() {
|
|
ASSERT_OK(blob_db_->PutUntil(WriteOptions(), "foo", "v2", 400));
|
|
});
|
|
|
|
GCStats gc_stats;
|
|
ASSERT_OK(blob_db_impl()->TEST_GCFileAndUpdateLSM(blob_files[0], &gc_stats));
|
|
ASSERT_EQ(1, gc_stats.blob_count);
|
|
ASSERT_EQ(1, gc_stats.num_keys_expired);
|
|
ASSERT_EQ(0, gc_stats.num_keys_relocated);
|
|
writer.join();
|
|
VerifyDB({{"foo", "v2"}});
|
|
}
|
|
|
|
// This test is no longer valid since we now return an error when we go
|
|
// over the configured max_db_size.
|
|
// The test needs to be re-written later in such a way that writes continue
|
|
// after a GC happens.
|
|
TEST_F(BlobDBTest, DISABLED_GCOldestSimpleBlobFileWhenOutOfSpace) {
|
|
// Use mock env to stop wall clock.
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.max_db_size = 100;
|
|
bdb_options.blob_file_size = 100;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::string value(100, 'v');
|
|
ASSERT_OK(blob_db_->PutWithTTL(WriteOptions(), "key_with_ttl", value, 60));
|
|
for (int i = 0; i < 10; i++) {
|
|
ASSERT_OK(blob_db_->Put(WriteOptions(), "key" + ToString(i), value));
|
|
}
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(11, blob_files.size());
|
|
ASSERT_TRUE(blob_files[0]->HasTTL());
|
|
ASSERT_TRUE(blob_files[0]->Immutable());
|
|
for (int i = 1; i <= 10; i++) {
|
|
ASSERT_FALSE(blob_files[i]->HasTTL());
|
|
if (i < 10) {
|
|
ASSERT_TRUE(blob_files[i]->Immutable());
|
|
}
|
|
}
|
|
blob_db_impl()->TEST_RunGC();
|
|
// The oldest simple blob file (i.e. blob_files[1]) has been selected for GC.
|
|
auto obsolete_files = blob_db_impl()->TEST_GetObsoleteFiles();
|
|
ASSERT_EQ(1, obsolete_files.size());
|
|
ASSERT_EQ(blob_files[1]->BlobFileNumber(),
|
|
obsolete_files[0]->BlobFileNumber());
|
|
}
|
|
|
|
TEST_F(BlobDBTest, ReadWhileGC) {
|
|
// run the same test for Get(), MultiGet() and Iterator each.
|
|
for (int i = 0; i < 2; i++) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
blob_db_->Put(WriteOptions(), "foo", "bar");
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
std::shared_ptr<BlobFile> bfile = blob_files[0];
|
|
uint64_t bfile_number = bfile->BlobFileNumber();
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(bfile));
|
|
|
|
switch (i) {
|
|
case 0:
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"BlobDBImpl::Get:AfterIndexEntryGet:1",
|
|
"BlobDBTest::ReadWhileGC:1"},
|
|
{"BlobDBTest::ReadWhileGC:2",
|
|
"BlobDBImpl::Get:AfterIndexEntryGet:2"}});
|
|
break;
|
|
case 1:
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"BlobDBIterator::UpdateBlobValue:Start:1",
|
|
"BlobDBTest::ReadWhileGC:1"},
|
|
{"BlobDBTest::ReadWhileGC:2",
|
|
"BlobDBIterator::UpdateBlobValue:Start:2"}});
|
|
break;
|
|
}
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
auto reader = port::Thread([this, i]() {
|
|
std::string value;
|
|
std::vector<std::string> values;
|
|
std::vector<Status> statuses;
|
|
switch (i) {
|
|
case 0:
|
|
ASSERT_OK(blob_db_->Get(ReadOptions(), "foo", &value));
|
|
ASSERT_EQ("bar", value);
|
|
break;
|
|
case 1:
|
|
// VerifyDB use iterator to scan the DB.
|
|
VerifyDB({{"foo", "bar"}});
|
|
break;
|
|
}
|
|
});
|
|
|
|
TEST_SYNC_POINT("BlobDBTest::ReadWhileGC:1");
|
|
GCStats gc_stats;
|
|
ASSERT_OK(blob_db_impl()->TEST_GCFileAndUpdateLSM(bfile, &gc_stats));
|
|
ASSERT_EQ(1, gc_stats.blob_count);
|
|
ASSERT_EQ(1, gc_stats.num_keys_relocated);
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
// The file shouln't be deleted
|
|
blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(2, blob_files.size());
|
|
ASSERT_EQ(bfile_number, blob_files[0]->BlobFileNumber());
|
|
auto obsolete_files = blob_db_impl()->TEST_GetObsoleteFiles();
|
|
ASSERT_EQ(1, obsolete_files.size());
|
|
ASSERT_EQ(bfile_number, obsolete_files[0]->BlobFileNumber());
|
|
TEST_SYNC_POINT("BlobDBTest::ReadWhileGC:2");
|
|
reader.join();
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
|
|
// The file is deleted this time
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_NE(bfile_number, blob_files[0]->BlobFileNumber());
|
|
ASSERT_EQ(0, blob_db_impl()->TEST_GetObsoleteFiles().size());
|
|
VerifyDB({{"foo", "bar"}});
|
|
Destroy();
|
|
}
|
|
}
|
|
|
|
TEST_F(BlobDBTest, SnapshotAndGarbageCollection) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
// i = when to take snapshot
|
|
for (int i = 0; i < 4; i++) {
|
|
for (bool delete_key : {true, false}) {
|
|
const Snapshot *snapshot = nullptr;
|
|
Destroy();
|
|
Open(bdb_options);
|
|
// First file
|
|
ASSERT_OK(Put("key1", "value"));
|
|
if (i == 0) {
|
|
snapshot = blob_db_->GetSnapshot();
|
|
}
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[0]));
|
|
// Second file
|
|
ASSERT_OK(Put("key2", "value"));
|
|
if (i == 1) {
|
|
snapshot = blob_db_->GetSnapshot();
|
|
}
|
|
blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(2, blob_files.size());
|
|
auto bfile = blob_files[1];
|
|
ASSERT_FALSE(bfile->Immutable());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(bfile));
|
|
// Third file
|
|
ASSERT_OK(Put("key3", "value"));
|
|
if (i == 2) {
|
|
snapshot = blob_db_->GetSnapshot();
|
|
}
|
|
if (delete_key) {
|
|
Delete("key2");
|
|
}
|
|
GCStats gc_stats;
|
|
ASSERT_OK(blob_db_impl()->TEST_GCFileAndUpdateLSM(bfile, &gc_stats));
|
|
ASSERT_TRUE(bfile->Obsolete());
|
|
ASSERT_EQ(1, gc_stats.blob_count);
|
|
if (delete_key) {
|
|
ASSERT_EQ(0, gc_stats.num_keys_relocated);
|
|
} else {
|
|
ASSERT_EQ(1, gc_stats.num_keys_relocated);
|
|
}
|
|
ASSERT_EQ(blob_db_->GetLatestSequenceNumber(),
|
|
bfile->GetObsoleteSequence());
|
|
if (i == 3) {
|
|
snapshot = blob_db_->GetSnapshot();
|
|
}
|
|
size_t num_files = delete_key ? 3 : 4;
|
|
ASSERT_EQ(num_files, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
if (i == 3) {
|
|
// The snapshot shouldn't see data in bfile
|
|
ASSERT_EQ(num_files - 1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
blob_db_->ReleaseSnapshot(snapshot);
|
|
} else {
|
|
// The snapshot will see data in bfile, so the file shouldn't be deleted
|
|
ASSERT_EQ(num_files, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
blob_db_->ReleaseSnapshot(snapshot);
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
ASSERT_EQ(num_files - 1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_F(BlobDBTest, ColumnFamilyNotSupported) {
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
mock_env_->set_current_time(0);
|
|
Open(BlobDBOptions(), options);
|
|
ColumnFamilyHandle *default_handle = blob_db_->DefaultColumnFamily();
|
|
ColumnFamilyHandle *handle = nullptr;
|
|
std::string value;
|
|
std::vector<std::string> values;
|
|
// The call simply pass through to base db. It should succeed.
|
|
ASSERT_OK(
|
|
blob_db_->CreateColumnFamily(ColumnFamilyOptions(), "foo", &handle));
|
|
ASSERT_TRUE(blob_db_->Put(WriteOptions(), handle, "k", "v").IsNotSupported());
|
|
ASSERT_TRUE(blob_db_->PutWithTTL(WriteOptions(), handle, "k", "v", 60)
|
|
.IsNotSupported());
|
|
ASSERT_TRUE(blob_db_->PutUntil(WriteOptions(), handle, "k", "v", 100)
|
|
.IsNotSupported());
|
|
WriteBatch batch;
|
|
batch.Put("k1", "v1");
|
|
batch.Put(handle, "k2", "v2");
|
|
ASSERT_TRUE(blob_db_->Write(WriteOptions(), &batch).IsNotSupported());
|
|
ASSERT_TRUE(blob_db_->Get(ReadOptions(), "k1", &value).IsNotFound());
|
|
ASSERT_TRUE(
|
|
blob_db_->Get(ReadOptions(), handle, "k", &value).IsNotSupported());
|
|
auto statuses = blob_db_->MultiGet(ReadOptions(), {default_handle, handle},
|
|
{"k1", "k2"}, &values);
|
|
ASSERT_EQ(2, statuses.size());
|
|
ASSERT_TRUE(statuses[0].IsNotSupported());
|
|
ASSERT_TRUE(statuses[1].IsNotSupported());
|
|
ASSERT_EQ(nullptr, blob_db_->NewIterator(ReadOptions(), handle));
|
|
delete handle;
|
|
}
|
|
|
|
TEST_F(BlobDBTest, GetLiveFilesMetaData) {
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
std::map<std::string, std::string> data;
|
|
for (size_t i = 0; i < 100; i++) {
|
|
PutRandom("key" + ToString(i), &rnd, &data);
|
|
}
|
|
auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
|
|
std::vector<LiveFileMetaData> metadata;
|
|
bdb_impl->GetLiveFilesMetaData(&metadata);
|
|
ASSERT_EQ(1U, metadata.size());
|
|
std::string filename = dbname_ + "/blob_dir/000001.blob";
|
|
ASSERT_EQ(filename, metadata[0].name);
|
|
ASSERT_EQ("default", metadata[0].column_family_name);
|
|
std::vector<std::string> livefile;
|
|
uint64_t mfs;
|
|
bdb_impl->GetLiveFiles(livefile, &mfs, false);
|
|
ASSERT_EQ(4U, livefile.size());
|
|
ASSERT_EQ(filename, livefile[3]);
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, MigrateFromPlainRocksDB) {
|
|
constexpr size_t kNumKey = 20;
|
|
constexpr size_t kNumIteration = 10;
|
|
Random rnd(301);
|
|
std::map<std::string, std::string> data;
|
|
std::vector<bool> is_blob(kNumKey, false);
|
|
|
|
// Write to plain rocksdb.
|
|
Options options;
|
|
options.create_if_missing = true;
|
|
DB *db = nullptr;
|
|
ASSERT_OK(DB::Open(options, dbname_, &db));
|
|
for (size_t i = 0; i < kNumIteration; i++) {
|
|
auto key_index = rnd.Next() % kNumKey;
|
|
std::string key = "key" + ToString(key_index);
|
|
PutRandom(db, key, &rnd, &data);
|
|
}
|
|
VerifyDB(db, data);
|
|
delete db;
|
|
db = nullptr;
|
|
|
|
// Open as blob db. Verify it can read existing data.
|
|
Open();
|
|
VerifyDB(blob_db_, data);
|
|
for (size_t i = 0; i < kNumIteration; i++) {
|
|
auto key_index = rnd.Next() % kNumKey;
|
|
std::string key = "key" + ToString(key_index);
|
|
is_blob[key_index] = true;
|
|
PutRandom(blob_db_, key, &rnd, &data);
|
|
}
|
|
VerifyDB(blob_db_, data);
|
|
delete blob_db_;
|
|
blob_db_ = nullptr;
|
|
|
|
// Verify plain db return error for keys written by blob db.
|
|
ASSERT_OK(DB::Open(options, dbname_, &db));
|
|
std::string value;
|
|
for (size_t i = 0; i < kNumKey; i++) {
|
|
std::string key = "key" + ToString(i);
|
|
Status s = db->Get(ReadOptions(), key, &value);
|
|
if (data.count(key) == 0) {
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
} else if (is_blob[i]) {
|
|
ASSERT_TRUE(s.IsNotSupported());
|
|
} else {
|
|
ASSERT_OK(s);
|
|
ASSERT_EQ(data[key], value);
|
|
}
|
|
}
|
|
delete db;
|
|
}
|
|
|
|
// Test to verify that a NoSpace IOError Status is returned on reaching
|
|
// max_db_size limit.
|
|
TEST_F(BlobDBTest, OutOfSpace) {
|
|
// Use mock env to stop wall clock.
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.max_db_size = 200;
|
|
bdb_options.is_fifo = false;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
|
|
// Each stored blob has an overhead of about 42 bytes currently.
|
|
// So a small key + a 100 byte blob should take up ~150 bytes in the db.
|
|
std::string value(100, 'v');
|
|
ASSERT_OK(blob_db_->PutWithTTL(WriteOptions(), "key1", value, 60));
|
|
|
|
// Putting another blob should fail as ading it would exceed the max_db_size
|
|
// limit.
|
|
Status s = blob_db_->PutWithTTL(WriteOptions(), "key2", value, 60);
|
|
ASSERT_TRUE(s.IsIOError());
|
|
ASSERT_TRUE(s.IsNoSpace());
|
|
}
|
|
|
|
TEST_F(BlobDBTest, FIFOEviction) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.max_db_size = 200;
|
|
bdb_options.blob_file_size = 100;
|
|
bdb_options.is_fifo = true;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
|
|
std::atomic<int> evict_count{0};
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"BlobDBImpl::EvictOldestBlobFile:Evicted",
|
|
[&](void *) { evict_count++; });
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
// Each stored blob has an overhead of 32 bytes currently.
|
|
// So a 100 byte blob should take up 132 bytes.
|
|
std::string value(100, 'v');
|
|
ASSERT_OK(blob_db_->PutWithTTL(WriteOptions(), "key1", value, 10));
|
|
VerifyDB({{"key1", value}});
|
|
|
|
ASSERT_EQ(1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
|
|
// Adding another 100 byte blob would take the total size to 264 bytes
|
|
// (2*132). max_db_size will be exceeded
|
|
// than max_db_size and trigger FIFO eviction.
|
|
ASSERT_OK(blob_db_->PutWithTTL(WriteOptions(), "key2", value, 60));
|
|
ASSERT_EQ(1, evict_count);
|
|
// key1 will exist until corresponding file be deleted.
|
|
VerifyDB({{"key1", value}, {"key2", value}});
|
|
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(2, blob_files.size());
|
|
ASSERT_TRUE(blob_files[0]->Obsolete());
|
|
ASSERT_FALSE(blob_files[1]->Obsolete());
|
|
auto obsolete_files = blob_db_impl()->TEST_GetObsoleteFiles();
|
|
ASSERT_EQ(1, obsolete_files.size());
|
|
ASSERT_EQ(blob_files[0], obsolete_files[0]);
|
|
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
obsolete_files = blob_db_impl()->TEST_GetObsoleteFiles();
|
|
ASSERT_TRUE(obsolete_files.empty());
|
|
VerifyDB({{"key2", value}});
|
|
}
|
|
|
|
TEST_F(BlobDBTest, FIFOEviction_NoOldestFileToEvict) {
|
|
Options options;
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.max_db_size = 1000;
|
|
bdb_options.blob_file_size = 5000;
|
|
bdb_options.is_fifo = true;
|
|
bdb_options.disable_background_tasks = true;
|
|
Open(bdb_options);
|
|
|
|
std::atomic<int> evict_count{0};
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"BlobDBImpl::EvictOldestBlobFile:Evicted",
|
|
[&](void *) { evict_count++; });
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
std::string value(2000, 'v');
|
|
ASSERT_TRUE(Put("foo", std::string(2000, 'v')).IsNoSpace());
|
|
ASSERT_EQ(0, evict_count);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, FIFOEviction_NoEnoughBlobFilesToEvict) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.is_fifo = true;
|
|
bdb_options.min_blob_size = 100;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
// Use mock env to stop wall clock.
|
|
options.env = mock_env_.get();
|
|
options.disable_auto_compactions = true;
|
|
auto statistics = CreateDBStatistics();
|
|
options.statistics = statistics;
|
|
Open(bdb_options, options);
|
|
|
|
ASSERT_EQ(0, blob_db_impl()->TEST_live_sst_size());
|
|
std::string small_value(50, 'v');
|
|
std::map<std::string, std::string> data;
|
|
// Insert some data into LSM tree to make sure FIFO eviction take SST
|
|
// file size into account.
|
|
for (int i = 0; i < 1000; i++) {
|
|
ASSERT_OK(Put("key" + ToString(i), small_value, &data));
|
|
}
|
|
ASSERT_OK(blob_db_->Flush(FlushOptions()));
|
|
uint64_t live_sst_size = 0;
|
|
ASSERT_TRUE(blob_db_->GetIntProperty(DB::Properties::kTotalSstFilesSize,
|
|
&live_sst_size));
|
|
ASSERT_TRUE(live_sst_size > 0);
|
|
ASSERT_EQ(live_sst_size, blob_db_impl()->TEST_live_sst_size());
|
|
|
|
bdb_options.max_db_size = live_sst_size + 2000;
|
|
Reopen(bdb_options, options);
|
|
ASSERT_EQ(live_sst_size, blob_db_impl()->TEST_live_sst_size());
|
|
|
|
std::string value_1k(1000, 'v');
|
|
ASSERT_OK(PutWithTTL("large_key1", value_1k, 60, &data));
|
|
ASSERT_EQ(0, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
VerifyDB(data);
|
|
// large_key2 evicts large_key1
|
|
ASSERT_OK(PutWithTTL("large_key2", value_1k, 60, &data));
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
data.erase("large_key1");
|
|
VerifyDB(data);
|
|
// large_key3 get no enough space even after evicting large_key2, so it
|
|
// instead return no space error.
|
|
std::string value_2k(2000, 'v');
|
|
ASSERT_TRUE(PutWithTTL("large_key3", value_2k, 60).IsNoSpace());
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
// Verify large_key2 still exists.
|
|
VerifyDB(data);
|
|
}
|
|
|
|
// Test flush or compaction will trigger FIFO eviction since they update
|
|
// total SST file size.
|
|
TEST_F(BlobDBTest, FIFOEviction_TriggerOnSSTSizeChange) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.max_db_size = 1000;
|
|
bdb_options.is_fifo = true;
|
|
bdb_options.min_blob_size = 100;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
// Use mock env to stop wall clock.
|
|
options.env = mock_env_.get();
|
|
auto statistics = CreateDBStatistics();
|
|
options.statistics = statistics;
|
|
options.compression = kNoCompression;
|
|
Open(bdb_options, options);
|
|
|
|
std::string value(800, 'v');
|
|
ASSERT_OK(PutWithTTL("large_key", value, 60));
|
|
ASSERT_EQ(1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
ASSERT_EQ(0, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
VerifyDB({{"large_key", value}});
|
|
|
|
// Insert some small keys and flush to bring DB out of space.
|
|
std::map<std::string, std::string> data;
|
|
for (int i = 0; i < 10; i++) {
|
|
ASSERT_OK(Put("key" + ToString(i), "v", &data));
|
|
}
|
|
ASSERT_OK(blob_db_->Flush(FlushOptions()));
|
|
|
|
// Verify large_key is deleted by FIFO eviction.
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
ASSERT_EQ(0, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
VerifyDB(data);
|
|
}
|
|
|
|
TEST_F(BlobDBTest, InlineSmallValues) {
|
|
constexpr uint64_t kMaxExpiration = 1000;
|
|
Random rnd(301);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.ttl_range_secs = kMaxExpiration;
|
|
bdb_options.min_blob_size = 100;
|
|
bdb_options.blob_file_size = 256 * 1000 * 1000;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
mock_env_->set_current_time(0);
|
|
Open(bdb_options, options);
|
|
std::map<std::string, std::string> data;
|
|
std::map<std::string, KeyVersion> versions;
|
|
for (size_t i = 0; i < 1000; i++) {
|
|
bool is_small_value = rnd.Next() % 2;
|
|
bool has_ttl = rnd.Next() % 2;
|
|
uint64_t expiration = rnd.Next() % kMaxExpiration;
|
|
int len = is_small_value ? 50 : 200;
|
|
std::string key = "key" + ToString(i);
|
|
std::string value = test::RandomHumanReadableString(&rnd, len);
|
|
std::string blob_index;
|
|
data[key] = value;
|
|
SequenceNumber sequence = blob_db_->GetLatestSequenceNumber() + 1;
|
|
if (!has_ttl) {
|
|
ASSERT_OK(blob_db_->Put(WriteOptions(), key, value));
|
|
} else {
|
|
ASSERT_OK(blob_db_->PutUntil(WriteOptions(), key, value, expiration));
|
|
}
|
|
ASSERT_EQ(blob_db_->GetLatestSequenceNumber(), sequence);
|
|
versions[key] =
|
|
KeyVersion(key, value, sequence,
|
|
(is_small_value && !has_ttl) ? kTypeValue : kTypeBlobIndex);
|
|
}
|
|
VerifyDB(data);
|
|
VerifyBaseDB(versions);
|
|
auto *bdb_impl = static_cast<BlobDBImpl *>(blob_db_);
|
|
auto blob_files = bdb_impl->TEST_GetBlobFiles();
|
|
ASSERT_EQ(2, blob_files.size());
|
|
std::shared_ptr<BlobFile> non_ttl_file;
|
|
std::shared_ptr<BlobFile> ttl_file;
|
|
if (blob_files[0]->HasTTL()) {
|
|
ttl_file = blob_files[0];
|
|
non_ttl_file = blob_files[1];
|
|
} else {
|
|
non_ttl_file = blob_files[0];
|
|
ttl_file = blob_files[1];
|
|
}
|
|
ASSERT_FALSE(non_ttl_file->HasTTL());
|
|
ASSERT_TRUE(ttl_file->HasTTL());
|
|
}
|
|
|
|
TEST_F(BlobDBTest, CompactionFilterNotSupported) {
|
|
class TestCompactionFilter : public CompactionFilter {
|
|
virtual const char *Name() const { return "TestCompactionFilter"; }
|
|
};
|
|
class TestCompactionFilterFactory : public CompactionFilterFactory {
|
|
virtual const char *Name() const { return "TestCompactionFilterFactory"; }
|
|
virtual std::unique_ptr<CompactionFilter> CreateCompactionFilter(
|
|
const CompactionFilter::Context & /*context*/) {
|
|
return std::unique_ptr<CompactionFilter>(new TestCompactionFilter());
|
|
}
|
|
};
|
|
for (int i = 0; i < 2; i++) {
|
|
Options options;
|
|
if (i == 0) {
|
|
options.compaction_filter = new TestCompactionFilter();
|
|
} else {
|
|
options.compaction_filter_factory.reset(
|
|
new TestCompactionFilterFactory());
|
|
}
|
|
ASSERT_TRUE(TryOpen(BlobDBOptions(), options).IsNotSupported());
|
|
delete options.compaction_filter;
|
|
}
|
|
}
|
|
|
|
// Test comapction filter should remove any expired blob index.
|
|
TEST_F(BlobDBTest, FilterExpiredBlobIndex) {
|
|
constexpr size_t kNumKeys = 100;
|
|
constexpr size_t kNumPuts = 1000;
|
|
constexpr uint64_t kMaxExpiration = 1000;
|
|
constexpr uint64_t kCompactTime = 500;
|
|
constexpr uint64_t kMinBlobSize = 100;
|
|
Random rnd(301);
|
|
mock_env_->set_current_time(0);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = kMinBlobSize;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
options.env = mock_env_.get();
|
|
Open(bdb_options, options);
|
|
|
|
std::map<std::string, std::string> data;
|
|
std::map<std::string, std::string> data_after_compact;
|
|
for (size_t i = 0; i < kNumPuts; i++) {
|
|
bool is_small_value = rnd.Next() % 2;
|
|
bool has_ttl = rnd.Next() % 2;
|
|
uint64_t expiration = rnd.Next() % kMaxExpiration;
|
|
int len = is_small_value ? 10 : 200;
|
|
std::string key = "key" + ToString(rnd.Next() % kNumKeys);
|
|
std::string value = test::RandomHumanReadableString(&rnd, len);
|
|
if (!has_ttl) {
|
|
if (is_small_value) {
|
|
std::string blob_entry;
|
|
BlobIndex::EncodeInlinedTTL(&blob_entry, expiration, value);
|
|
// Fake blob index with TTL. See what it will do.
|
|
ASSERT_GT(kMinBlobSize, blob_entry.size());
|
|
value = blob_entry;
|
|
}
|
|
ASSERT_OK(Put(key, value));
|
|
data_after_compact[key] = value;
|
|
} else {
|
|
ASSERT_OK(PutUntil(key, value, expiration));
|
|
if (expiration <= kCompactTime) {
|
|
data_after_compact.erase(key);
|
|
} else {
|
|
data_after_compact[key] = value;
|
|
}
|
|
}
|
|
data[key] = value;
|
|
}
|
|
VerifyDB(data);
|
|
|
|
mock_env_->set_current_time(kCompactTime);
|
|
// Take a snapshot before compaction. Make sure expired blob indexes is
|
|
// filtered regardless of snapshot.
|
|
const Snapshot *snapshot = blob_db_->GetSnapshot();
|
|
// Issue manual compaction to trigger compaction filter.
|
|
ASSERT_OK(blob_db_->CompactRange(CompactRangeOptions(),
|
|
blob_db_->DefaultColumnFamily(), nullptr,
|
|
nullptr));
|
|
blob_db_->ReleaseSnapshot(snapshot);
|
|
// Verify expired blob index are filtered.
|
|
std::vector<KeyVersion> versions;
|
|
GetAllKeyVersions(blob_db_, "", "", &versions);
|
|
ASSERT_EQ(data_after_compact.size(), versions.size());
|
|
for (auto &version : versions) {
|
|
ASSERT_TRUE(data_after_compact.count(version.user_key) > 0);
|
|
}
|
|
VerifyDB(data_after_compact);
|
|
}
|
|
|
|
// Test compaction filter should remove any blob index where corresponding
|
|
// blob file has been removed (either by FIFO or garbage collection).
|
|
TEST_F(BlobDBTest, FilterFileNotAvailable) {
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
options.disable_auto_compactions = true;
|
|
Open(bdb_options, options);
|
|
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
auto blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(1, blob_files.size());
|
|
ASSERT_EQ(1, blob_files[0]->BlobFileNumber());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[0]));
|
|
|
|
ASSERT_OK(Put("bar", "v2"));
|
|
blob_files = blob_db_impl()->TEST_GetBlobFiles();
|
|
ASSERT_EQ(2, blob_files.size());
|
|
ASSERT_EQ(2, blob_files[1]->BlobFileNumber());
|
|
ASSERT_OK(blob_db_impl()->TEST_CloseBlobFile(blob_files[1]));
|
|
|
|
DB *base_db = blob_db_->GetRootDB();
|
|
std::vector<KeyVersion> versions;
|
|
ASSERT_OK(GetAllKeyVersions(base_db, "", "", &versions));
|
|
ASSERT_EQ(2, versions.size());
|
|
ASSERT_EQ("bar", versions[0].user_key);
|
|
ASSERT_EQ("foo", versions[1].user_key);
|
|
VerifyDB({{"bar", "v2"}, {"foo", "v1"}});
|
|
|
|
ASSERT_OK(blob_db_->Flush(FlushOptions()));
|
|
ASSERT_OK(blob_db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
ASSERT_OK(GetAllKeyVersions(base_db, "", "", &versions));
|
|
ASSERT_EQ(2, versions.size());
|
|
ASSERT_EQ("bar", versions[0].user_key);
|
|
ASSERT_EQ("foo", versions[1].user_key);
|
|
VerifyDB({{"bar", "v2"}, {"foo", "v1"}});
|
|
|
|
// Remove the first blob file and compact. foo should be remove from base db.
|
|
blob_db_impl()->TEST_ObsoleteBlobFile(blob_files[0]);
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
ASSERT_OK(blob_db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
ASSERT_OK(GetAllKeyVersions(base_db, "", "", &versions));
|
|
ASSERT_EQ(1, versions.size());
|
|
ASSERT_EQ("bar", versions[0].user_key);
|
|
VerifyDB({{"bar", "v2"}});
|
|
|
|
// Remove the second blob file and compact. bar should be remove from base db.
|
|
blob_db_impl()->TEST_ObsoleteBlobFile(blob_files[1]);
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
ASSERT_OK(blob_db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
ASSERT_OK(GetAllKeyVersions(base_db, "", "", &versions));
|
|
ASSERT_EQ(0, versions.size());
|
|
VerifyDB({});
|
|
}
|
|
|
|
// Test compaction filter should filter any inlined TTL keys that would have
|
|
// been dropped by last FIFO eviction if they are store out-of-line.
|
|
TEST_F(BlobDBTest, FilterForFIFOEviction) {
|
|
Random rnd(215);
|
|
BlobDBOptions bdb_options;
|
|
bdb_options.min_blob_size = 100;
|
|
bdb_options.ttl_range_secs = 60;
|
|
bdb_options.max_db_size = 0;
|
|
bdb_options.disable_background_tasks = true;
|
|
Options options;
|
|
// Use mock env to stop wall clock.
|
|
mock_env_->set_current_time(0);
|
|
options.env = mock_env_.get();
|
|
auto statistics = CreateDBStatistics();
|
|
options.statistics = statistics;
|
|
options.disable_auto_compactions = true;
|
|
Open(bdb_options, options);
|
|
|
|
std::map<std::string, std::string> data;
|
|
std::map<std::string, std::string> data_after_compact;
|
|
// Insert some small values that will be inlined.
|
|
for (int i = 0; i < 1000; i++) {
|
|
std::string key = "key" + ToString(i);
|
|
std::string value = test::RandomHumanReadableString(&rnd, 50);
|
|
uint64_t ttl = rnd.Next() % 120 + 1;
|
|
ASSERT_OK(PutWithTTL(key, value, ttl, &data));
|
|
if (ttl >= 60) {
|
|
data_after_compact[key] = value;
|
|
}
|
|
}
|
|
uint64_t num_keys_to_evict = data.size() - data_after_compact.size();
|
|
ASSERT_OK(blob_db_->Flush(FlushOptions()));
|
|
uint64_t live_sst_size = blob_db_impl()->TEST_live_sst_size();
|
|
ASSERT_GT(live_sst_size, 0);
|
|
VerifyDB(data);
|
|
|
|
bdb_options.max_db_size = live_sst_size + 30000;
|
|
bdb_options.is_fifo = true;
|
|
Reopen(bdb_options, options);
|
|
VerifyDB(data);
|
|
|
|
// Put two large values, each on a different blob file.
|
|
std::string large_value(10000, 'v');
|
|
ASSERT_OK(PutWithTTL("large_key1", large_value, 90));
|
|
ASSERT_OK(PutWithTTL("large_key2", large_value, 150));
|
|
ASSERT_EQ(2, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
ASSERT_EQ(0, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
data["large_key1"] = large_value;
|
|
data["large_key2"] = large_value;
|
|
VerifyDB(data);
|
|
|
|
// Put a third large value which will bring the DB out of space.
|
|
// FIFO eviction will evict the file of large_key1.
|
|
ASSERT_OK(PutWithTTL("large_key3", large_value, 150));
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
ASSERT_EQ(2, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
blob_db_impl()->TEST_DeleteObsoleteFiles();
|
|
ASSERT_EQ(1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
data.erase("large_key1");
|
|
data["large_key3"] = large_value;
|
|
VerifyDB(data);
|
|
|
|
// Putting some more small values. These values shouldn't be evicted by
|
|
// compaction filter since they are inserted after FIFO eviction.
|
|
ASSERT_OK(PutWithTTL("foo", "v", 30, &data_after_compact));
|
|
ASSERT_OK(PutWithTTL("bar", "v", 30, &data_after_compact));
|
|
|
|
// FIFO eviction doesn't trigger again since there enough room for the flush.
|
|
ASSERT_OK(blob_db_->Flush(FlushOptions()));
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
|
|
// Manual compact and check if compaction filter evict those keys with
|
|
// expiration < 60.
|
|
ASSERT_OK(blob_db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
// All keys with expiration < 60, plus large_key1 is filtered by
|
|
// compaction filter.
|
|
ASSERT_EQ(num_keys_to_evict + 1,
|
|
statistics->getTickerCount(BLOB_DB_BLOB_INDEX_EVICTED_COUNT));
|
|
ASSERT_EQ(1, statistics->getTickerCount(BLOB_DB_FIFO_NUM_FILES_EVICTED));
|
|
ASSERT_EQ(1, blob_db_impl()->TEST_GetBlobFiles().size());
|
|
data_after_compact["large_key2"] = large_value;
|
|
data_after_compact["large_key3"] = large_value;
|
|
VerifyDB(data_after_compact);
|
|
}
|
|
|
|
} // namespace blob_db
|
|
} // namespace rocksdb
|
|
|
|
// A black-box test for the ttl wrapper around rocksdb
|
|
int main(int argc, char** argv) {
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|
|
|
|
#else
|
|
#include <stdio.h>
|
|
|
|
int main(int argc, char** argv) {
|
|
fprintf(stderr, "SKIPPED as BlobDB is not supported in ROCKSDB_LITE\n");
|
|
return 0;
|
|
}
|
|
|
|
#endif // !ROCKSDB_LITE
|