fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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327 lines
11 KiB
327 lines
11 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#ifndef ROCKSDB_LITE
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#include <stdlib.h>
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#include <algorithm>
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#include <map>
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#include <string>
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#include <vector>
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#include "db/db_impl/db_impl.h"
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#include "db/db_test_util.h"
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#include "db/version_set.h"
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#include "db/write_batch_internal.h"
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#include "file/filename.h"
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#include "port/stack_trace.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "rocksdb/transaction_log.h"
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#include "test_util/sync_point.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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class ObsoleteFilesTest : public DBTestBase {
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public:
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ObsoleteFilesTest()
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: DBTestBase("obsolete_files_test", /*env_do_fsync=*/true),
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wal_dir_(dbname_ + "/wal_files") {}
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void AddKeys(int numkeys, int startkey) {
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WriteOptions options;
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options.sync = false;
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for (int i = startkey; i < (numkeys + startkey) ; i++) {
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std::string temp = std::to_string(i);
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Slice key(temp);
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Slice value(temp);
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ASSERT_OK(db_->Put(options, key, value));
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}
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}
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void createLevel0Files(int numFiles, int numKeysPerFile) {
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int startKey = 0;
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for (int i = 0; i < numFiles; i++) {
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AddKeys(numKeysPerFile, startKey);
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startKey += numKeysPerFile;
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ASSERT_OK(dbfull()->TEST_FlushMemTable());
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ASSERT_OK(
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dbfull()->TEST_WaitForCompact()); // wait for background flush (flush
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// is also a kind of compaction).
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}
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}
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void CheckFileTypeCounts(const std::string& dir, int required_log,
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int required_sst, int required_manifest) {
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std::vector<std::string> filenames;
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ASSERT_OK(env_->GetChildren(dir, &filenames));
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int log_cnt = 0;
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int sst_cnt = 0;
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int manifest_cnt = 0;
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for (auto file : filenames) {
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uint64_t number;
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FileType type;
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if (ParseFileName(file, &number, &type)) {
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log_cnt += (type == kWalFile);
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sst_cnt += (type == kTableFile);
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manifest_cnt += (type == kDescriptorFile);
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}
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}
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ASSERT_EQ(required_log, log_cnt);
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ASSERT_EQ(required_sst, sst_cnt);
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ASSERT_EQ(required_manifest, manifest_cnt);
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}
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void ReopenDB() {
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Options options = CurrentOptions();
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// Trigger compaction when the number of level 0 files reaches 2.
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options.create_if_missing = true;
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options.level0_file_num_compaction_trigger = 2;
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options.disable_auto_compactions = false;
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options.delete_obsolete_files_period_micros = 0; // always do full purge
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options.enable_thread_tracking = true;
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options.write_buffer_size = 1024 * 1024 * 1000;
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options.target_file_size_base = 1024 * 1024 * 1000;
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options.max_bytes_for_level_base = 1024 * 1024 * 1000;
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options.WAL_ttl_seconds = 300; // Used to test log files
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options.WAL_size_limit_MB = 1024; // Used to test log files
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options.wal_dir = wal_dir_;
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// Note: the following prevents an otherwise harmless data race between the
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// test setup code (AddBlobFile) in ObsoleteFilesTest.BlobFiles and the
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// periodic stat dumping thread.
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options.stats_dump_period_sec = 0;
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Destroy(options);
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Reopen(options);
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}
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const std::string wal_dir_;
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};
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TEST_F(ObsoleteFilesTest, RaceForObsoleteFileDeletion) {
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ReopenDB();
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->LoadDependency({
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{"DBImpl::BackgroundCallCompaction:FoundObsoleteFiles",
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"ObsoleteFilesTest::RaceForObsoleteFileDeletion:1"},
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{"DBImpl::BackgroundCallCompaction:PurgedObsoleteFiles",
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"ObsoleteFilesTest::RaceForObsoleteFileDeletion:2"},
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});
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::DeleteObsoleteFileImpl:AfterDeletion", [&](void* arg) {
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Status* p_status = reinterpret_cast<Status*>(arg);
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ASSERT_OK(*p_status);
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});
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::CloseHelper:PendingPurgeFinished", [&](void* arg) {
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std::unordered_set<uint64_t>* files_grabbed_for_purge_ptr =
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reinterpret_cast<std::unordered_set<uint64_t>*>(arg);
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ASSERT_TRUE(files_grabbed_for_purge_ptr->empty());
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});
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SyncPoint::GetInstance()->EnableProcessing();
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createLevel0Files(2, 50000);
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CheckFileTypeCounts(wal_dir_, 1, 0, 0);
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port::Thread user_thread([this]() {
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JobContext jobCxt(0);
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TEST_SYNC_POINT("ObsoleteFilesTest::RaceForObsoleteFileDeletion:1");
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dbfull()->TEST_LockMutex();
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dbfull()->FindObsoleteFiles(&jobCxt, true /* force=true */,
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false /* no_full_scan=false */);
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dbfull()->TEST_UnlockMutex();
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TEST_SYNC_POINT("ObsoleteFilesTest::RaceForObsoleteFileDeletion:2");
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dbfull()->PurgeObsoleteFiles(jobCxt);
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jobCxt.Clean();
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});
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user_thread.join();
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}
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TEST_F(ObsoleteFilesTest, DeleteObsoleteOptionsFile) {
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ReopenDB();
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createLevel0Files(2, 50000);
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CheckFileTypeCounts(wal_dir_, 1, 0, 0);
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ASSERT_OK(dbfull()->DisableFileDeletions());
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for (int i = 0; i != 4; ++i) {
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if (i % 2) {
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ASSERT_OK(dbfull()->SetOptions(dbfull()->DefaultColumnFamily(),
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{{"paranoid_file_checks", "false"}}));
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} else {
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ASSERT_OK(dbfull()->SetOptions(dbfull()->DefaultColumnFamily(),
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{{"paranoid_file_checks", "true"}}));
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}
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}
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ASSERT_OK(dbfull()->EnableFileDeletions(true /* force */));
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Close();
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std::vector<std::string> files;
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int opts_file_count = 0;
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ASSERT_OK(env_->GetChildren(dbname_, &files));
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for (const auto& file : files) {
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uint64_t file_num;
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Slice dummy_info_log_name_prefix;
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FileType type;
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WalFileType log_type;
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if (ParseFileName(file, &file_num, dummy_info_log_name_prefix, &type,
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&log_type) &&
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type == kOptionsFile) {
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opts_file_count++;
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}
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}
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ASSERT_EQ(2, opts_file_count);
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}
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TEST_F(ObsoleteFilesTest, BlobFiles) {
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ReopenDB();
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VersionSet* const versions = dbfull()->GetVersionSet();
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assert(versions);
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assert(versions->GetColumnFamilySet());
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ColumnFamilyData* const cfd = versions->GetColumnFamilySet()->GetDefault();
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assert(cfd);
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const ImmutableCFOptions* const ioptions = cfd->ioptions();
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assert(ioptions);
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assert(!ioptions->cf_paths.empty());
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const std::string& path = ioptions->cf_paths.front().path;
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// Add an obsolete blob file.
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constexpr uint64_t first_blob_file_number = 234;
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versions->AddObsoleteBlobFile(first_blob_file_number, path);
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// Add a live blob file.
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Version* const version = cfd->current();
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assert(version);
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VersionStorageInfo* const storage_info = version->storage_info();
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assert(storage_info);
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constexpr uint64_t second_blob_file_number = 456;
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constexpr uint64_t second_total_blob_count = 100;
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constexpr uint64_t second_total_blob_bytes = 2000000;
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constexpr char second_checksum_method[] = "CRC32B";
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constexpr char second_checksum_value[] = "\x6d\xbd\xf2\x3a";
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auto shared_meta = SharedBlobFileMetaData::Create(
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second_blob_file_number, second_total_blob_count, second_total_blob_bytes,
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second_checksum_method, second_checksum_value);
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constexpr uint64_t second_garbage_blob_count = 0;
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constexpr uint64_t second_garbage_blob_bytes = 0;
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auto meta = BlobFileMetaData::Create(
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std::move(shared_meta), BlobFileMetaData::LinkedSsts(),
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second_garbage_blob_count, second_garbage_blob_bytes);
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storage_info->AddBlobFile(std::move(meta));
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// Check for obsolete files and make sure the first blob file is picked up
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// and grabbed for purge. The second blob file should be on the live list.
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constexpr int job_id = 0;
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JobContext job_context{job_id};
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dbfull()->TEST_LockMutex();
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constexpr bool force_full_scan = false;
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dbfull()->FindObsoleteFiles(&job_context, force_full_scan);
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dbfull()->TEST_UnlockMutex();
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ASSERT_TRUE(job_context.HaveSomethingToDelete());
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ASSERT_EQ(job_context.blob_delete_files.size(), 1);
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ASSERT_EQ(job_context.blob_delete_files[0].GetBlobFileNumber(),
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first_blob_file_number);
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const auto& files_grabbed_for_purge =
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dbfull()->TEST_GetFilesGrabbedForPurge();
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ASSERT_NE(files_grabbed_for_purge.find(first_blob_file_number),
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files_grabbed_for_purge.end());
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ASSERT_EQ(job_context.blob_live.size(), 1);
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ASSERT_EQ(job_context.blob_live[0], second_blob_file_number);
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// Hack the job context a bit by adding a few files to the full scan
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// list and adjusting the pending file number. We add the two files
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// above as well as two additional ones, where one is old
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// and should be cleaned up, and the other is still pending.
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constexpr uint64_t old_blob_file_number = 123;
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constexpr uint64_t pending_blob_file_number = 567;
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job_context.full_scan_candidate_files.emplace_back(
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BlobFileName(old_blob_file_number), path);
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job_context.full_scan_candidate_files.emplace_back(
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BlobFileName(first_blob_file_number), path);
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job_context.full_scan_candidate_files.emplace_back(
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BlobFileName(second_blob_file_number), path);
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job_context.full_scan_candidate_files.emplace_back(
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BlobFileName(pending_blob_file_number), path);
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job_context.min_pending_output = pending_blob_file_number;
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// Purge obsolete files and make sure we purge the old file and the first file
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// (and keep the second file and the pending file).
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std::vector<std::string> deleted_files;
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::DeleteObsoleteFileImpl::BeforeDeletion", [&](void* arg) {
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const std::string* file = static_cast<std::string*>(arg);
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assert(file);
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constexpr char blob_extension[] = ".blob";
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if (file->find(blob_extension) != std::string::npos) {
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deleted_files.emplace_back(*file);
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}
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});
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SyncPoint::GetInstance()->EnableProcessing();
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dbfull()->PurgeObsoleteFiles(job_context);
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job_context.Clean();
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->ClearAllCallBacks();
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ASSERT_EQ(files_grabbed_for_purge.find(first_blob_file_number),
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files_grabbed_for_purge.end());
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std::sort(deleted_files.begin(), deleted_files.end());
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const std::vector<std::string> expected_deleted_files{
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BlobFileName(path, old_blob_file_number),
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BlobFileName(path, first_blob_file_number)};
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ASSERT_EQ(deleted_files, expected_deleted_files);
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}
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
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::testing::InitGoogleTest(&argc, argv);
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RegisterCustomObjects(argc, argv);
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return RUN_ALL_TESTS();
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}
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#else
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#include <stdio.h>
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int main(int /*argc*/, char** /*argv*/) {
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fprintf(stderr,
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"SKIPPED as DBImpl::DeleteFile is not supported in ROCKSDB_LITE\n");
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return 0;
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}
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#endif // !ROCKSDB_LITE
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