18dcf7f98d
Summary: Add PreReleaseCallback to be called at the end of WriteImpl but before publishing the sequence number. The callback is used in WritePrepareTxn to i) update the commit map, ii) update the last published sequence number in the 2nd write queue. It also ensures that all the commits will go to the 2nd queue. These changes will ensure that the commit map is updated before the sequence number is published and used by reading snapshots. If we use two write queues, the snapshots will use the seq number published by the 2nd queue. If we use one write queue (the default, the snapshots will use the last seq number in the memtable, which also indicates the last published seq number. Closes https://github.com/facebook/rocksdb/pull/3205 Differential Revision: D6438959 Pulled By: maysamyabandeh fbshipit-source-id: f8b6c434e94bc5f5ab9cb696879d4c23e2577ab9
1184 lines
42 KiB
C++
1184 lines
42 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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//
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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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#include "db/db_impl.h"
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include <inttypes.h>
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#include "db/builder.h"
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#include "options/options_helper.h"
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#include "rocksdb/wal_filter.h"
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#include "table/block_based_table_factory.h"
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#include "util/rate_limiter.h"
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#include "util/sst_file_manager_impl.h"
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#include "util/sync_point.h"
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namespace rocksdb {
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Options SanitizeOptions(const std::string& dbname,
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const Options& src) {
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auto db_options = SanitizeOptions(dbname, DBOptions(src));
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ImmutableDBOptions immutable_db_options(db_options);
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auto cf_options =
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SanitizeOptions(immutable_db_options, ColumnFamilyOptions(src));
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return Options(db_options, cf_options);
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}
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DBOptions SanitizeOptions(const std::string& dbname, const DBOptions& src) {
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DBOptions result(src);
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// result.max_open_files means an "infinite" open files.
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if (result.max_open_files != -1) {
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int max_max_open_files = port::GetMaxOpenFiles();
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if (max_max_open_files == -1) {
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max_max_open_files = 0x400000;
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}
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ClipToRange(&result.max_open_files, 20, max_max_open_files);
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}
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if (result.info_log == nullptr) {
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Status s = CreateLoggerFromOptions(dbname, result, &result.info_log);
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if (!s.ok()) {
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// No place suitable for logging
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result.info_log = nullptr;
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}
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}
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if (!result.write_buffer_manager) {
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result.write_buffer_manager.reset(
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new WriteBufferManager(result.db_write_buffer_size));
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}
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auto bg_job_limits = DBImpl::GetBGJobLimits(result.max_background_flushes,
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result.max_background_compactions,
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result.max_background_jobs,
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true /* parallelize_compactions */);
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result.env->IncBackgroundThreadsIfNeeded(bg_job_limits.max_compactions,
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Env::Priority::LOW);
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result.env->IncBackgroundThreadsIfNeeded(bg_job_limits.max_flushes,
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Env::Priority::HIGH);
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if (result.rate_limiter.get() != nullptr) {
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if (result.bytes_per_sync == 0) {
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result.bytes_per_sync = 1024 * 1024;
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}
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}
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if (result.delayed_write_rate == 0) {
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if (result.rate_limiter.get() != nullptr) {
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result.delayed_write_rate = result.rate_limiter->GetBytesPerSecond();
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}
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if (result.delayed_write_rate == 0) {
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result.delayed_write_rate = 16 * 1024 * 1024;
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}
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}
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if (result.WAL_ttl_seconds > 0 || result.WAL_size_limit_MB > 0) {
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result.recycle_log_file_num = false;
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}
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if (result.recycle_log_file_num &&
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(result.wal_recovery_mode == WALRecoveryMode::kPointInTimeRecovery ||
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result.wal_recovery_mode == WALRecoveryMode::kAbsoluteConsistency)) {
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// kPointInTimeRecovery is indistinguishable from
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// kTolerateCorruptedTailRecords in recycle mode since we define
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// the "end" of the log as the first corrupt record we encounter.
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// kAbsoluteConsistency doesn't make sense because even a clean
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// shutdown leaves old junk at the end of the log file.
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result.wal_recovery_mode = WALRecoveryMode::kTolerateCorruptedTailRecords;
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}
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if (result.wal_dir.empty()) {
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// Use dbname as default
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result.wal_dir = dbname;
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}
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if (result.wal_dir.back() == '/') {
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result.wal_dir = result.wal_dir.substr(0, result.wal_dir.size() - 1);
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}
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if (result.db_paths.size() == 0) {
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result.db_paths.emplace_back(dbname, std::numeric_limits<uint64_t>::max());
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}
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if (result.use_direct_io_for_flush_and_compaction &&
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result.compaction_readahead_size == 0) {
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TEST_SYNC_POINT_CALLBACK("SanitizeOptions:direct_io", nullptr);
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result.compaction_readahead_size = 1024 * 1024 * 2;
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}
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if (result.compaction_readahead_size > 0 ||
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result.use_direct_io_for_flush_and_compaction) {
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result.new_table_reader_for_compaction_inputs = true;
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}
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// Force flush on DB open if 2PC is enabled, since with 2PC we have no
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// guarantee that consecutive log files have consecutive sequence id, which
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// make recovery complicated.
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if (result.allow_2pc) {
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result.avoid_flush_during_recovery = false;
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}
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#ifndef ROCKSDB_LITE
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// When the DB is stopped, it's possible that there are some .trash files that
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// were not deleted yet, when we open the DB we will find these .trash files
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// and schedule them to be deleted (or delete immediately if SstFileManager
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// was not used)
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auto sfm = static_cast<SstFileManagerImpl*>(result.sst_file_manager.get());
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for (size_t i = 0; i < result.db_paths.size(); i++) {
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DeleteScheduler::CleanupDirectory(result.env, sfm, result.db_paths[i].path);
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}
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#endif
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return result;
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}
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namespace {
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Status SanitizeOptionsByTable(
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const DBOptions& db_opts,
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const std::vector<ColumnFamilyDescriptor>& column_families) {
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Status s;
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for (auto cf : column_families) {
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s = cf.options.table_factory->SanitizeOptions(db_opts, cf.options);
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if (!s.ok()) {
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return s;
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}
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}
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return Status::OK();
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}
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static Status ValidateOptions(
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const DBOptions& db_options,
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const std::vector<ColumnFamilyDescriptor>& column_families) {
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Status s;
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for (auto& cfd : column_families) {
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s = CheckCompressionSupported(cfd.options);
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if (s.ok() && db_options.allow_concurrent_memtable_write) {
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s = CheckConcurrentWritesSupported(cfd.options);
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}
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if (!s.ok()) {
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return s;
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}
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if (db_options.db_paths.size() > 1) {
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if ((cfd.options.compaction_style != kCompactionStyleUniversal) &&
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(cfd.options.compaction_style != kCompactionStyleLevel)) {
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return Status::NotSupported(
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"More than one DB paths are only supported in "
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"universal and level compaction styles. ");
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}
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}
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if (cfd.options.compaction_options_fifo.ttl > 0) {
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if (db_options.max_open_files != -1) {
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return Status::NotSupported(
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"FIFO Compaction with TTL is only supported when files are always "
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"kept open (set max_open_files = -1). ");
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}
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if (cfd.options.table_factory->Name() !=
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BlockBasedTableFactory().Name()) {
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return Status::NotSupported(
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"FIFO Compaction with TTL is only supported in "
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"Block-Based Table format. ");
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}
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}
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}
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if (db_options.db_paths.size() > 4) {
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return Status::NotSupported(
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"More than four DB paths are not supported yet. ");
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}
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if (db_options.allow_mmap_reads && db_options.use_direct_reads) {
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// Protect against assert in PosixMMapReadableFile constructor
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return Status::NotSupported(
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"If memory mapped reads (allow_mmap_reads) are enabled "
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"then direct I/O reads (use_direct_reads) must be disabled. ");
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}
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if (db_options.allow_mmap_writes &&
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db_options.use_direct_io_for_flush_and_compaction) {
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return Status::NotSupported(
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"If memory mapped writes (allow_mmap_writes) are enabled "
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"then direct I/O writes (use_direct_io_for_flush_and_compaction) must "
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"be disabled. ");
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}
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if (db_options.keep_log_file_num == 0) {
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return Status::InvalidArgument("keep_log_file_num must be greater than 0");
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}
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return Status::OK();
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}
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} // namespace
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Status DBImpl::NewDB() {
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VersionEdit new_db;
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new_db.SetLogNumber(0);
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new_db.SetNextFile(2);
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new_db.SetLastSequence(0);
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Status s;
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ROCKS_LOG_INFO(immutable_db_options_.info_log, "Creating manifest 1 \n");
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const std::string manifest = DescriptorFileName(dbname_, 1);
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{
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unique_ptr<WritableFile> file;
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EnvOptions env_options = env_->OptimizeForManifestWrite(env_options_);
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s = NewWritableFile(env_, manifest, &file, env_options);
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if (!s.ok()) {
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return s;
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}
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file->SetPreallocationBlockSize(
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immutable_db_options_.manifest_preallocation_size);
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unique_ptr<WritableFileWriter> file_writer(
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new WritableFileWriter(std::move(file), env_options));
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log::Writer log(std::move(file_writer), 0, false);
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std::string record;
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new_db.EncodeTo(&record);
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s = log.AddRecord(record);
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if (s.ok()) {
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s = SyncManifest(env_, &immutable_db_options_, log.file());
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}
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}
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if (s.ok()) {
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// Make "CURRENT" file that points to the new manifest file.
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s = SetCurrentFile(env_, dbname_, 1, directories_.GetDbDir());
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} else {
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env_->DeleteFile(manifest);
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}
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return s;
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}
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Status DBImpl::Directories::CreateAndNewDirectory(
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Env* env, const std::string& dirname,
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std::unique_ptr<Directory>* directory) const {
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// We call CreateDirIfMissing() as the directory may already exist (if we
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// are reopening a DB), when this happens we don't want creating the
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// directory to cause an error. However, we need to check if creating the
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// directory fails or else we may get an obscure message about the lock
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// file not existing. One real-world example of this occurring is if
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// env->CreateDirIfMissing() doesn't create intermediate directories, e.g.
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// when dbname_ is "dir/db" but when "dir" doesn't exist.
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Status s = env->CreateDirIfMissing(dirname);
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if (!s.ok()) {
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return s;
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}
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return env->NewDirectory(dirname, directory);
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}
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Status DBImpl::Directories::SetDirectories(
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Env* env, const std::string& dbname, const std::string& wal_dir,
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const std::vector<DbPath>& data_paths) {
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Status s = CreateAndNewDirectory(env, dbname, &db_dir_);
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if (!s.ok()) {
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return s;
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}
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if (!wal_dir.empty() && dbname != wal_dir) {
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s = CreateAndNewDirectory(env, wal_dir, &wal_dir_);
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if (!s.ok()) {
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return s;
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}
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}
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data_dirs_.clear();
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for (auto& p : data_paths) {
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const std::string db_path = p.path;
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if (db_path == dbname) {
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data_dirs_.emplace_back(nullptr);
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} else {
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std::unique_ptr<Directory> path_directory;
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s = CreateAndNewDirectory(env, db_path, &path_directory);
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if (!s.ok()) {
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return s;
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}
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data_dirs_.emplace_back(path_directory.release());
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}
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}
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assert(data_dirs_.size() == data_paths.size());
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return Status::OK();
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}
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Status DBImpl::Recover(
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const std::vector<ColumnFamilyDescriptor>& column_families, bool read_only,
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bool error_if_log_file_exist, bool error_if_data_exists_in_logs) {
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mutex_.AssertHeld();
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bool is_new_db = false;
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assert(db_lock_ == nullptr);
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if (!read_only) {
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Status s = directories_.SetDirectories(env_, dbname_,
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immutable_db_options_.wal_dir,
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immutable_db_options_.db_paths);
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if (!s.ok()) {
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return s;
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}
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s = env_->LockFile(LockFileName(dbname_), &db_lock_);
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if (!s.ok()) {
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return s;
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}
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s = env_->FileExists(CurrentFileName(dbname_));
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if (s.IsNotFound()) {
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if (immutable_db_options_.create_if_missing) {
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s = NewDB();
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is_new_db = true;
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if (!s.ok()) {
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return s;
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}
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} else {
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return Status::InvalidArgument(
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dbname_, "does not exist (create_if_missing is false)");
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}
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} else if (s.ok()) {
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if (immutable_db_options_.error_if_exists) {
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return Status::InvalidArgument(
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dbname_, "exists (error_if_exists is true)");
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}
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} else {
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// Unexpected error reading file
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assert(s.IsIOError());
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return s;
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}
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// Check for the IDENTITY file and create it if not there
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s = env_->FileExists(IdentityFileName(dbname_));
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if (s.IsNotFound()) {
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s = SetIdentityFile(env_, dbname_);
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if (!s.ok()) {
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return s;
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}
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} else if (!s.ok()) {
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assert(s.IsIOError());
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return s;
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}
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}
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Status s = versions_->Recover(column_families, read_only);
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if (immutable_db_options_.paranoid_checks && s.ok()) {
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s = CheckConsistency();
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}
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if (s.ok()) {
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SequenceNumber next_sequence(kMaxSequenceNumber);
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default_cf_handle_ = new ColumnFamilyHandleImpl(
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versions_->GetColumnFamilySet()->GetDefault(), this, &mutex_);
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default_cf_internal_stats_ = default_cf_handle_->cfd()->internal_stats();
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single_column_family_mode_ =
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versions_->GetColumnFamilySet()->NumberOfColumnFamilies() == 1;
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// Recover from all newer log files than the ones named in the
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// descriptor (new log files may have been added by the previous
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// incarnation without registering them in the descriptor).
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//
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// Note that prev_log_number() is no longer used, but we pay
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// attention to it in case we are recovering a database
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// produced by an older version of rocksdb.
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std::vector<std::string> filenames;
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s = env_->GetChildren(immutable_db_options_.wal_dir, &filenames);
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if (!s.ok()) {
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return s;
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}
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std::vector<uint64_t> logs;
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for (size_t i = 0; i < filenames.size(); i++) {
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uint64_t number;
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FileType type;
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if (ParseFileName(filenames[i], &number, &type) && type == kLogFile) {
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if (is_new_db) {
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return Status::Corruption(
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"While creating a new Db, wal_dir contains "
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"existing log file: ",
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filenames[i]);
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} else {
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logs.push_back(number);
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}
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}
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}
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if (logs.size() > 0) {
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if (error_if_log_file_exist) {
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return Status::Corruption(
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"The db was opened in readonly mode with error_if_log_file_exist"
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"flag but a log file already exists");
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} else if (error_if_data_exists_in_logs) {
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for (auto& log : logs) {
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std::string fname = LogFileName(immutable_db_options_.wal_dir, log);
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uint64_t bytes;
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s = env_->GetFileSize(fname, &bytes);
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if (s.ok()) {
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if (bytes > 0) {
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return Status::Corruption(
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"error_if_data_exists_in_logs is set but there are data "
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" in log files.");
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}
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}
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}
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}
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}
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if (!logs.empty()) {
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// Recover in the order in which the logs were generated
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std::sort(logs.begin(), logs.end());
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s = RecoverLogFiles(logs, &next_sequence, read_only);
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if (!s.ok()) {
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// Clear memtables if recovery failed
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for (auto cfd : *versions_->GetColumnFamilySet()) {
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cfd->CreateNewMemtable(*cfd->GetLatestMutableCFOptions(),
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kMaxSequenceNumber);
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}
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}
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}
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}
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// Initial value
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max_total_in_memory_state_ = 0;
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for (auto cfd : *versions_->GetColumnFamilySet()) {
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auto* mutable_cf_options = cfd->GetLatestMutableCFOptions();
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max_total_in_memory_state_ += mutable_cf_options->write_buffer_size *
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mutable_cf_options->max_write_buffer_number;
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}
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return s;
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}
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// REQUIRES: log_numbers are sorted in ascending order
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Status DBImpl::RecoverLogFiles(const std::vector<uint64_t>& log_numbers,
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SequenceNumber* next_sequence, bool read_only) {
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struct LogReporter : public log::Reader::Reporter {
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Env* env;
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Logger* info_log;
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const char* fname;
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Status* status; // nullptr if immutable_db_options_.paranoid_checks==false
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virtual void Corruption(size_t bytes, const Status& s) override {
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ROCKS_LOG_WARN(info_log, "%s%s: dropping %d bytes; %s",
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(this->status == nullptr ? "(ignoring error) " : ""),
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fname, static_cast<int>(bytes), s.ToString().c_str());
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if (this->status != nullptr && this->status->ok()) {
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*this->status = s;
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}
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}
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};
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mutex_.AssertHeld();
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Status status;
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std::unordered_map<int, VersionEdit> version_edits;
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// no need to refcount because iteration is under mutex
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for (auto cfd : *versions_->GetColumnFamilySet()) {
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VersionEdit edit;
|
|
edit.SetColumnFamily(cfd->GetID());
|
|
version_edits.insert({cfd->GetID(), edit});
|
|
}
|
|
int job_id = next_job_id_.fetch_add(1);
|
|
{
|
|
auto stream = event_logger_.Log();
|
|
stream << "job" << job_id << "event"
|
|
<< "recovery_started";
|
|
stream << "log_files";
|
|
stream.StartArray();
|
|
for (auto log_number : log_numbers) {
|
|
stream << log_number;
|
|
}
|
|
stream.EndArray();
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
if (immutable_db_options_.wal_filter != nullptr) {
|
|
std::map<std::string, uint32_t> cf_name_id_map;
|
|
std::map<uint32_t, uint64_t> cf_lognumber_map;
|
|
for (auto cfd : *versions_->GetColumnFamilySet()) {
|
|
cf_name_id_map.insert(
|
|
std::make_pair(cfd->GetName(), cfd->GetID()));
|
|
cf_lognumber_map.insert(
|
|
std::make_pair(cfd->GetID(), cfd->GetLogNumber()));
|
|
}
|
|
|
|
immutable_db_options_.wal_filter->ColumnFamilyLogNumberMap(cf_lognumber_map,
|
|
cf_name_id_map);
|
|
}
|
|
#endif
|
|
|
|
bool stop_replay_by_wal_filter = false;
|
|
bool stop_replay_for_corruption = false;
|
|
bool flushed = false;
|
|
uint64_t corrupted_log_number = kMaxSequenceNumber;
|
|
for (auto log_number : log_numbers) {
|
|
// The previous incarnation may not have written any MANIFEST
|
|
// records after allocating this log number. So we manually
|
|
// update the file number allocation counter in VersionSet.
|
|
versions_->MarkFileNumberUsed(log_number);
|
|
// Open the log file
|
|
std::string fname = LogFileName(immutable_db_options_.wal_dir, log_number);
|
|
|
|
ROCKS_LOG_INFO(immutable_db_options_.info_log,
|
|
"Recovering log #%" PRIu64 " mode %d", log_number,
|
|
immutable_db_options_.wal_recovery_mode);
|
|
auto logFileDropped = [this, &fname]() {
|
|
uint64_t bytes;
|
|
if (env_->GetFileSize(fname, &bytes).ok()) {
|
|
auto info_log = immutable_db_options_.info_log.get();
|
|
ROCKS_LOG_WARN(info_log, "%s: dropping %d bytes", fname.c_str(),
|
|
static_cast<int>(bytes));
|
|
}
|
|
};
|
|
if (stop_replay_by_wal_filter) {
|
|
logFileDropped();
|
|
continue;
|
|
}
|
|
|
|
unique_ptr<SequentialFileReader> file_reader;
|
|
{
|
|
unique_ptr<SequentialFile> file;
|
|
status = env_->NewSequentialFile(fname, &file,
|
|
env_->OptimizeForLogRead(env_options_));
|
|
if (!status.ok()) {
|
|
MaybeIgnoreError(&status);
|
|
if (!status.ok()) {
|
|
return status;
|
|
} else {
|
|
// Fail with one log file, but that's ok.
|
|
// Try next one.
|
|
continue;
|
|
}
|
|
}
|
|
file_reader.reset(new SequentialFileReader(std::move(file)));
|
|
}
|
|
|
|
// Create the log reader.
|
|
LogReporter reporter;
|
|
reporter.env = env_;
|
|
reporter.info_log = immutable_db_options_.info_log.get();
|
|
reporter.fname = fname.c_str();
|
|
if (!immutable_db_options_.paranoid_checks ||
|
|
immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kSkipAnyCorruptedRecords) {
|
|
reporter.status = nullptr;
|
|
} else {
|
|
reporter.status = &status;
|
|
}
|
|
// We intentially make log::Reader do checksumming even if
|
|
// paranoid_checks==false so that corruptions cause entire commits
|
|
// to be skipped instead of propagating bad information (like overly
|
|
// large sequence numbers).
|
|
log::Reader reader(immutable_db_options_.info_log, std::move(file_reader),
|
|
&reporter, true /*checksum*/, 0 /*initial_offset*/,
|
|
log_number);
|
|
|
|
// Determine if we should tolerate incomplete records at the tail end of the
|
|
// Read all the records and add to a memtable
|
|
std::string scratch;
|
|
Slice record;
|
|
WriteBatch batch;
|
|
|
|
while (!stop_replay_by_wal_filter &&
|
|
reader.ReadRecord(&record, &scratch,
|
|
immutable_db_options_.wal_recovery_mode) &&
|
|
status.ok()) {
|
|
if (record.size() < WriteBatchInternal::kHeader) {
|
|
reporter.Corruption(record.size(),
|
|
Status::Corruption("log record too small"));
|
|
continue;
|
|
}
|
|
WriteBatchInternal::SetContents(&batch, record);
|
|
SequenceNumber sequence = WriteBatchInternal::Sequence(&batch);
|
|
|
|
if (immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kPointInTimeRecovery) {
|
|
// In point-in-time recovery mode, if sequence id of log files are
|
|
// consecutive, we continue recovery despite corruption. This could
|
|
// happen when we open and write to a corrupted DB, where sequence id
|
|
// will start from the last sequence id we recovered.
|
|
if (sequence == *next_sequence) {
|
|
stop_replay_for_corruption = false;
|
|
}
|
|
if (stop_replay_for_corruption) {
|
|
logFileDropped();
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
if (immutable_db_options_.wal_filter != nullptr) {
|
|
WriteBatch new_batch;
|
|
bool batch_changed = false;
|
|
|
|
WalFilter::WalProcessingOption wal_processing_option =
|
|
immutable_db_options_.wal_filter->LogRecordFound(
|
|
log_number, fname, batch, &new_batch, &batch_changed);
|
|
|
|
switch (wal_processing_option) {
|
|
case WalFilter::WalProcessingOption::kContinueProcessing:
|
|
// do nothing, proceeed normally
|
|
break;
|
|
case WalFilter::WalProcessingOption::kIgnoreCurrentRecord:
|
|
// skip current record
|
|
continue;
|
|
case WalFilter::WalProcessingOption::kStopReplay:
|
|
// skip current record and stop replay
|
|
stop_replay_by_wal_filter = true;
|
|
continue;
|
|
case WalFilter::WalProcessingOption::kCorruptedRecord: {
|
|
status =
|
|
Status::Corruption("Corruption reported by Wal Filter ",
|
|
immutable_db_options_.wal_filter->Name());
|
|
MaybeIgnoreError(&status);
|
|
if (!status.ok()) {
|
|
reporter.Corruption(record.size(), status);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
assert(false); // unhandled case
|
|
status = Status::NotSupported(
|
|
"Unknown WalProcessingOption returned"
|
|
" by Wal Filter ",
|
|
immutable_db_options_.wal_filter->Name());
|
|
MaybeIgnoreError(&status);
|
|
if (!status.ok()) {
|
|
return status;
|
|
} else {
|
|
// Ignore the error with current record processing.
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (batch_changed) {
|
|
// Make sure that the count in the new batch is
|
|
// within the orignal count.
|
|
int new_count = WriteBatchInternal::Count(&new_batch);
|
|
int original_count = WriteBatchInternal::Count(&batch);
|
|
if (new_count > original_count) {
|
|
ROCKS_LOG_FATAL(
|
|
immutable_db_options_.info_log,
|
|
"Recovering log #%" PRIu64
|
|
" mode %d log filter %s returned "
|
|
"more records (%d) than original (%d) which is not allowed. "
|
|
"Aborting recovery.",
|
|
log_number, immutable_db_options_.wal_recovery_mode,
|
|
immutable_db_options_.wal_filter->Name(), new_count,
|
|
original_count);
|
|
status = Status::NotSupported(
|
|
"More than original # of records "
|
|
"returned by Wal Filter ",
|
|
immutable_db_options_.wal_filter->Name());
|
|
return status;
|
|
}
|
|
// Set the same sequence number in the new_batch
|
|
// as the original batch.
|
|
WriteBatchInternal::SetSequence(&new_batch,
|
|
WriteBatchInternal::Sequence(&batch));
|
|
batch = new_batch;
|
|
}
|
|
}
|
|
#endif // ROCKSDB_LITE
|
|
|
|
// If column family was not found, it might mean that the WAL write
|
|
// batch references to the column family that was dropped after the
|
|
// insert. We don't want to fail the whole write batch in that case --
|
|
// we just ignore the update.
|
|
// That's why we set ignore missing column families to true
|
|
bool has_valid_writes = false;
|
|
status = WriteBatchInternal::InsertInto(
|
|
&batch, column_family_memtables_.get(), &flush_scheduler_, true,
|
|
log_number, this, false /* concurrent_memtable_writes */,
|
|
next_sequence, &has_valid_writes, seq_per_batch_);
|
|
MaybeIgnoreError(&status);
|
|
if (!status.ok()) {
|
|
// We are treating this as a failure while reading since we read valid
|
|
// blocks that do not form coherent data
|
|
reporter.Corruption(record.size(), status);
|
|
continue;
|
|
}
|
|
|
|
if (has_valid_writes && !read_only) {
|
|
// we can do this because this is called before client has access to the
|
|
// DB and there is only a single thread operating on DB
|
|
ColumnFamilyData* cfd;
|
|
|
|
while ((cfd = flush_scheduler_.TakeNextColumnFamily()) != nullptr) {
|
|
cfd->Unref();
|
|
// If this asserts, it means that InsertInto failed in
|
|
// filtering updates to already-flushed column families
|
|
assert(cfd->GetLogNumber() <= log_number);
|
|
auto iter = version_edits.find(cfd->GetID());
|
|
assert(iter != version_edits.end());
|
|
VersionEdit* edit = &iter->second;
|
|
status = WriteLevel0TableForRecovery(job_id, cfd, cfd->mem(), edit);
|
|
if (!status.ok()) {
|
|
// Reflect errors immediately so that conditions like full
|
|
// file-systems cause the DB::Open() to fail.
|
|
return status;
|
|
}
|
|
flushed = true;
|
|
|
|
cfd->CreateNewMemtable(*cfd->GetLatestMutableCFOptions(),
|
|
*next_sequence);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!status.ok()) {
|
|
if (status.IsNotSupported()) {
|
|
// We should not treat NotSupported as corruption. It is rather a clear
|
|
// sign that we are processing a WAL that is produced by an incompatible
|
|
// version of the code.
|
|
return status;
|
|
}
|
|
if (immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kSkipAnyCorruptedRecords) {
|
|
// We should ignore all errors unconditionally
|
|
status = Status::OK();
|
|
} else if (immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kPointInTimeRecovery) {
|
|
// We should ignore the error but not continue replaying
|
|
status = Status::OK();
|
|
stop_replay_for_corruption = true;
|
|
corrupted_log_number = log_number;
|
|
ROCKS_LOG_INFO(immutable_db_options_.info_log,
|
|
"Point in time recovered to log #%" PRIu64
|
|
" seq #%" PRIu64,
|
|
log_number, *next_sequence);
|
|
} else {
|
|
assert(immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kTolerateCorruptedTailRecords ||
|
|
immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kAbsoluteConsistency);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
flush_scheduler_.Clear();
|
|
auto last_sequence = *next_sequence - 1;
|
|
if ((*next_sequence != kMaxSequenceNumber) &&
|
|
(versions_->LastSequence() <= last_sequence)) {
|
|
versions_->SetLastAllocatedSequence(last_sequence);
|
|
versions_->SetLastPublishedSequence(last_sequence);
|
|
versions_->SetLastSequence(last_sequence);
|
|
}
|
|
}
|
|
// Compare the corrupted log number to all columnfamily's current log number.
|
|
// Abort Open() if any column family's log number is greater than
|
|
// the corrupted log number, which means CF contains data beyond the point of
|
|
// corruption. This could during PIT recovery when the WAL is corrupted and
|
|
// some (but not all) CFs are flushed
|
|
if (stop_replay_for_corruption == true &&
|
|
(immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kPointInTimeRecovery ||
|
|
immutable_db_options_.wal_recovery_mode ==
|
|
WALRecoveryMode::kTolerateCorruptedTailRecords)) {
|
|
for (auto cfd : *versions_->GetColumnFamilySet()) {
|
|
if (cfd->GetLogNumber() > corrupted_log_number) {
|
|
ROCKS_LOG_ERROR(immutable_db_options_.info_log,
|
|
"Column family inconsistency: SST file contains data"
|
|
" beyond the point of corruption.");
|
|
return Status::Corruption("SST file is ahead of WALs");
|
|
}
|
|
}
|
|
}
|
|
|
|
// True if there's any data in the WALs; if not, we can skip re-processing
|
|
// them later
|
|
bool data_seen = false;
|
|
if (!read_only) {
|
|
// no need to refcount since client still doesn't have access
|
|
// to the DB and can not drop column families while we iterate
|
|
auto max_log_number = log_numbers.back();
|
|
for (auto cfd : *versions_->GetColumnFamilySet()) {
|
|
auto iter = version_edits.find(cfd->GetID());
|
|
assert(iter != version_edits.end());
|
|
VersionEdit* edit = &iter->second;
|
|
|
|
if (cfd->GetLogNumber() > max_log_number) {
|
|
// Column family cfd has already flushed the data
|
|
// from all logs. Memtable has to be empty because
|
|
// we filter the updates based on log_number
|
|
// (in WriteBatch::InsertInto)
|
|
assert(cfd->mem()->GetFirstSequenceNumber() == 0);
|
|
assert(edit->NumEntries() == 0);
|
|
continue;
|
|
}
|
|
|
|
// flush the final memtable (if non-empty)
|
|
if (cfd->mem()->GetFirstSequenceNumber() != 0) {
|
|
// If flush happened in the middle of recovery (e.g. due to memtable
|
|
// being full), we flush at the end. Otherwise we'll need to record
|
|
// where we were on last flush, which make the logic complicated.
|
|
if (flushed || !immutable_db_options_.avoid_flush_during_recovery) {
|
|
status = WriteLevel0TableForRecovery(job_id, cfd, cfd->mem(), edit);
|
|
if (!status.ok()) {
|
|
// Recovery failed
|
|
break;
|
|
}
|
|
flushed = true;
|
|
|
|
cfd->CreateNewMemtable(*cfd->GetLatestMutableCFOptions(),
|
|
versions_->LastSequence());
|
|
}
|
|
data_seen = true;
|
|
}
|
|
|
|
// write MANIFEST with update
|
|
// writing log_number in the manifest means that any log file
|
|
// with number strongly less than (log_number + 1) is already
|
|
// recovered and should be ignored on next reincarnation.
|
|
// Since we already recovered max_log_number, we want all logs
|
|
// with numbers `<= max_log_number` (includes this one) to be ignored
|
|
if (flushed || cfd->mem()->GetFirstSequenceNumber() == 0) {
|
|
edit->SetLogNumber(max_log_number + 1);
|
|
}
|
|
// we must mark the next log number as used, even though it's
|
|
// not actually used. that is because VersionSet assumes
|
|
// VersionSet::next_file_number_ always to be strictly greater than any
|
|
// log number
|
|
versions_->MarkFileNumberUsed(max_log_number + 1);
|
|
status = versions_->LogAndApply(
|
|
cfd, *cfd->GetLatestMutableCFOptions(), edit, &mutex_);
|
|
if (!status.ok()) {
|
|
// Recovery failed
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (data_seen && !flushed) {
|
|
// Mark these as alive so they'll be considered for deletion later by
|
|
// FindObsoleteFiles()
|
|
if (two_write_queues_) {
|
|
log_write_mutex_.Lock();
|
|
}
|
|
for (auto log_number : log_numbers) {
|
|
alive_log_files_.push_back(LogFileNumberSize(log_number));
|
|
}
|
|
if (two_write_queues_) {
|
|
log_write_mutex_.Unlock();
|
|
}
|
|
}
|
|
|
|
event_logger_.Log() << "job" << job_id << "event"
|
|
<< "recovery_finished";
|
|
|
|
return status;
|
|
}
|
|
|
|
Status DBImpl::WriteLevel0TableForRecovery(int job_id, ColumnFamilyData* cfd,
|
|
MemTable* mem, VersionEdit* edit) {
|
|
mutex_.AssertHeld();
|
|
const uint64_t start_micros = env_->NowMicros();
|
|
FileMetaData meta;
|
|
auto pending_outputs_inserted_elem =
|
|
CaptureCurrentFileNumberInPendingOutputs();
|
|
meta.fd = FileDescriptor(versions_->NewFileNumber(), 0, 0);
|
|
ReadOptions ro;
|
|
ro.total_order_seek = true;
|
|
Arena arena;
|
|
Status s;
|
|
TableProperties table_properties;
|
|
{
|
|
ScopedArenaIterator iter(mem->NewIterator(ro, &arena));
|
|
ROCKS_LOG_DEBUG(immutable_db_options_.info_log,
|
|
"[%s] [WriteLevel0TableForRecovery]"
|
|
" Level-0 table #%" PRIu64 ": started",
|
|
cfd->GetName().c_str(), meta.fd.GetNumber());
|
|
|
|
// Get the latest mutable cf options while the mutex is still locked
|
|
const MutableCFOptions mutable_cf_options =
|
|
*cfd->GetLatestMutableCFOptions();
|
|
bool paranoid_file_checks =
|
|
cfd->GetLatestMutableCFOptions()->paranoid_file_checks;
|
|
|
|
int64_t _current_time = 0;
|
|
env_->GetCurrentTime(&_current_time); // ignore error
|
|
const uint64_t current_time = static_cast<uint64_t>(_current_time);
|
|
|
|
{
|
|
auto write_hint = cfd->CalculateSSTWriteHint(0);
|
|
mutex_.Unlock();
|
|
|
|
SequenceNumber earliest_write_conflict_snapshot;
|
|
std::vector<SequenceNumber> snapshot_seqs =
|
|
snapshots_.GetAll(&earliest_write_conflict_snapshot);
|
|
auto snapshot_checker = snapshot_checker_.get();
|
|
if (use_custom_gc_ && snapshot_checker == nullptr) {
|
|
snapshot_checker = DisableGCSnapshotChecker::Instance();
|
|
}
|
|
s = BuildTable(
|
|
dbname_, env_, *cfd->ioptions(), mutable_cf_options,
|
|
env_options_for_compaction_, cfd->table_cache(), iter.get(),
|
|
std::unique_ptr<InternalIterator>(mem->NewRangeTombstoneIterator(ro)),
|
|
&meta, cfd->internal_comparator(),
|
|
cfd->int_tbl_prop_collector_factories(), cfd->GetID(), cfd->GetName(),
|
|
snapshot_seqs, earliest_write_conflict_snapshot, snapshot_checker,
|
|
GetCompressionFlush(*cfd->ioptions(), mutable_cf_options),
|
|
cfd->ioptions()->compression_opts, paranoid_file_checks,
|
|
cfd->internal_stats(), TableFileCreationReason::kRecovery,
|
|
&event_logger_, job_id, Env::IO_HIGH, nullptr /* table_properties */,
|
|
-1 /* level */, current_time, write_hint);
|
|
LogFlush(immutable_db_options_.info_log);
|
|
ROCKS_LOG_DEBUG(immutable_db_options_.info_log,
|
|
"[%s] [WriteLevel0TableForRecovery]"
|
|
" Level-0 table #%" PRIu64 ": %" PRIu64 " bytes %s",
|
|
cfd->GetName().c_str(), meta.fd.GetNumber(),
|
|
meta.fd.GetFileSize(), s.ToString().c_str());
|
|
mutex_.Lock();
|
|
}
|
|
}
|
|
ReleaseFileNumberFromPendingOutputs(pending_outputs_inserted_elem);
|
|
|
|
// Note that if file_size is zero, the file has been deleted and
|
|
// should not be added to the manifest.
|
|
int level = 0;
|
|
if (s.ok() && meta.fd.GetFileSize() > 0) {
|
|
edit->AddFile(level, meta.fd.GetNumber(), meta.fd.GetPathId(),
|
|
meta.fd.GetFileSize(), meta.smallest, meta.largest,
|
|
meta.smallest_seqno, meta.largest_seqno,
|
|
meta.marked_for_compaction);
|
|
}
|
|
|
|
InternalStats::CompactionStats stats(1);
|
|
stats.micros = env_->NowMicros() - start_micros;
|
|
stats.bytes_written = meta.fd.GetFileSize();
|
|
stats.num_output_files = 1;
|
|
cfd->internal_stats()->AddCompactionStats(level, stats);
|
|
cfd->internal_stats()->AddCFStats(
|
|
InternalStats::BYTES_FLUSHED, meta.fd.GetFileSize());
|
|
RecordTick(stats_, COMPACT_WRITE_BYTES, meta.fd.GetFileSize());
|
|
return s;
|
|
}
|
|
|
|
Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
|
|
DBOptions db_options(options);
|
|
ColumnFamilyOptions cf_options(options);
|
|
std::vector<ColumnFamilyDescriptor> column_families;
|
|
column_families.push_back(
|
|
ColumnFamilyDescriptor(kDefaultColumnFamilyName, cf_options));
|
|
std::vector<ColumnFamilyHandle*> handles;
|
|
Status s = DB::Open(db_options, dbname, column_families, &handles, dbptr);
|
|
if (s.ok()) {
|
|
assert(handles.size() == 1);
|
|
// i can delete the handle since DBImpl is always holding a reference to
|
|
// default column family
|
|
delete handles[0];
|
|
}
|
|
return s;
|
|
}
|
|
|
|
Status DB::Open(const DBOptions& db_options, const std::string& dbname,
|
|
const std::vector<ColumnFamilyDescriptor>& column_families,
|
|
std::vector<ColumnFamilyHandle*>* handles, DB** dbptr) {
|
|
const bool seq_per_batch = true;
|
|
return DBImpl::Open(db_options, dbname, column_families, handles, dbptr,
|
|
!seq_per_batch);
|
|
}
|
|
|
|
Status DBImpl::Open(const DBOptions& db_options, const std::string& dbname,
|
|
const std::vector<ColumnFamilyDescriptor>& column_families,
|
|
std::vector<ColumnFamilyHandle*>* handles, DB** dbptr,
|
|
const bool seq_per_batch) {
|
|
Status s = SanitizeOptionsByTable(db_options, column_families);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
s = ValidateOptions(db_options, column_families);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
*dbptr = nullptr;
|
|
handles->clear();
|
|
|
|
size_t max_write_buffer_size = 0;
|
|
for (auto cf : column_families) {
|
|
max_write_buffer_size =
|
|
std::max(max_write_buffer_size, cf.options.write_buffer_size);
|
|
}
|
|
|
|
DBImpl* impl = new DBImpl(db_options, dbname, seq_per_batch);
|
|
s = impl->env_->CreateDirIfMissing(impl->immutable_db_options_.wal_dir);
|
|
if (s.ok()) {
|
|
for (auto db_path : impl->immutable_db_options_.db_paths) {
|
|
s = impl->env_->CreateDirIfMissing(db_path.path);
|
|
if (!s.ok()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!s.ok()) {
|
|
delete impl;
|
|
return s;
|
|
}
|
|
|
|
s = impl->CreateArchivalDirectory();
|
|
if (!s.ok()) {
|
|
delete impl;
|
|
return s;
|
|
}
|
|
impl->mutex_.Lock();
|
|
auto write_hint = impl->CalculateWALWriteHint();
|
|
// Handles create_if_missing, error_if_exists
|
|
s = impl->Recover(column_families);
|
|
if (s.ok()) {
|
|
uint64_t new_log_number = impl->versions_->NewFileNumber();
|
|
unique_ptr<WritableFile> lfile;
|
|
EnvOptions soptions(db_options);
|
|
EnvOptions opt_env_options =
|
|
impl->immutable_db_options_.env->OptimizeForLogWrite(
|
|
soptions, BuildDBOptions(impl->immutable_db_options_,
|
|
impl->mutable_db_options_));
|
|
s = NewWritableFile(
|
|
impl->immutable_db_options_.env,
|
|
LogFileName(impl->immutable_db_options_.wal_dir, new_log_number),
|
|
&lfile, opt_env_options);
|
|
if (s.ok()) {
|
|
lfile->SetWriteLifeTimeHint(write_hint);
|
|
lfile->SetPreallocationBlockSize(
|
|
impl->GetWalPreallocateBlockSize(max_write_buffer_size));
|
|
{
|
|
InstrumentedMutexLock wl(&impl->log_write_mutex_);
|
|
impl->logfile_number_ = new_log_number;
|
|
unique_ptr<WritableFileWriter> file_writer(
|
|
new WritableFileWriter(std::move(lfile), opt_env_options));
|
|
impl->logs_.emplace_back(
|
|
new_log_number,
|
|
new log::Writer(
|
|
std::move(file_writer), new_log_number,
|
|
impl->immutable_db_options_.recycle_log_file_num > 0));
|
|
}
|
|
|
|
// set column family handles
|
|
for (auto cf : column_families) {
|
|
auto cfd =
|
|
impl->versions_->GetColumnFamilySet()->GetColumnFamily(cf.name);
|
|
if (cfd != nullptr) {
|
|
handles->push_back(
|
|
new ColumnFamilyHandleImpl(cfd, impl, &impl->mutex_));
|
|
impl->NewThreadStatusCfInfo(cfd);
|
|
} else {
|
|
if (db_options.create_missing_column_families) {
|
|
// missing column family, create it
|
|
ColumnFamilyHandle* handle;
|
|
impl->mutex_.Unlock();
|
|
s = impl->CreateColumnFamily(cf.options, cf.name, &handle);
|
|
impl->mutex_.Lock();
|
|
if (s.ok()) {
|
|
handles->push_back(handle);
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
s = Status::InvalidArgument("Column family not found: ", cf.name);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (s.ok()) {
|
|
SuperVersionContext sv_context(/* create_superversion */ true);
|
|
for (auto cfd : *impl->versions_->GetColumnFamilySet()) {
|
|
impl->InstallSuperVersionAndScheduleWork(
|
|
cfd, &sv_context, *cfd->GetLatestMutableCFOptions());
|
|
}
|
|
sv_context.Clean();
|
|
if (impl->two_write_queues_) {
|
|
impl->log_write_mutex_.Lock();
|
|
}
|
|
impl->alive_log_files_.push_back(
|
|
DBImpl::LogFileNumberSize(impl->logfile_number_));
|
|
if (impl->two_write_queues_) {
|
|
impl->log_write_mutex_.Unlock();
|
|
}
|
|
impl->DeleteObsoleteFiles();
|
|
s = impl->directories_.GetDbDir()->Fsync();
|
|
}
|
|
}
|
|
|
|
if (s.ok()) {
|
|
for (auto cfd : *impl->versions_->GetColumnFamilySet()) {
|
|
if (cfd->ioptions()->compaction_style == kCompactionStyleFIFO) {
|
|
auto* vstorage = cfd->current()->storage_info();
|
|
for (int i = 1; i < vstorage->num_levels(); ++i) {
|
|
int num_files = vstorage->NumLevelFiles(i);
|
|
if (num_files > 0) {
|
|
s = Status::InvalidArgument(
|
|
"Not all files are at level 0. Cannot "
|
|
"open with FIFO compaction style.");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!cfd->mem()->IsSnapshotSupported()) {
|
|
impl->is_snapshot_supported_ = false;
|
|
}
|
|
if (cfd->ioptions()->merge_operator != nullptr &&
|
|
!cfd->mem()->IsMergeOperatorSupported()) {
|
|
s = Status::InvalidArgument(
|
|
"The memtable of column family %s does not support merge operator "
|
|
"its options.merge_operator is non-null", cfd->GetName().c_str());
|
|
}
|
|
if (!s.ok()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
TEST_SYNC_POINT("DBImpl::Open:Opened");
|
|
Status persist_options_status;
|
|
if (s.ok()) {
|
|
// Persist RocksDB Options before scheduling the compaction.
|
|
// The WriteOptionsFile() will release and lock the mutex internally.
|
|
persist_options_status = impl->WriteOptionsFile(
|
|
false /*need_mutex_lock*/, false /*need_enter_write_thread*/);
|
|
|
|
*dbptr = impl;
|
|
impl->opened_successfully_ = true;
|
|
impl->MaybeScheduleFlushOrCompaction();
|
|
}
|
|
impl->mutex_.Unlock();
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
auto sfm = static_cast<SstFileManagerImpl*>(
|
|
impl->immutable_db_options_.sst_file_manager.get());
|
|
if (s.ok() && sfm) {
|
|
// Notify SstFileManager about all sst files that already exist in
|
|
// db_paths[0] when the DB is opened.
|
|
auto& db_path = impl->immutable_db_options_.db_paths[0];
|
|
std::vector<std::string> existing_files;
|
|
impl->immutable_db_options_.env->GetChildren(db_path.path, &existing_files);
|
|
for (auto& file_name : existing_files) {
|
|
uint64_t file_number;
|
|
FileType file_type;
|
|
std::string file_path = db_path.path + "/" + file_name;
|
|
if (ParseFileName(file_name, &file_number, &file_type) &&
|
|
file_type == kTableFile) {
|
|
sfm->OnAddFile(file_path);
|
|
}
|
|
}
|
|
}
|
|
#endif // !ROCKSDB_LITE
|
|
|
|
if (s.ok()) {
|
|
ROCKS_LOG_INFO(impl->immutable_db_options_.info_log, "DB pointer %p", impl);
|
|
LogFlush(impl->immutable_db_options_.info_log);
|
|
if (!persist_options_status.ok()) {
|
|
s = Status::IOError(
|
|
"DB::Open() failed --- Unable to persist Options file",
|
|
persist_options_status.ToString());
|
|
}
|
|
}
|
|
if (!s.ok()) {
|
|
for (auto* h : *handles) {
|
|
delete h;
|
|
}
|
|
handles->clear();
|
|
delete impl;
|
|
*dbptr = nullptr;
|
|
}
|
|
return s;
|
|
}
|
|
} // namespace rocksdb
|