d641bb8fb0
Summary: With read_options.background_purge_on_iterator_cleanup=true, File deletion and closing can still happen in forward iterator, or WAL file closing. Cover those cases too. Test Plan: I am adding unit tests. Reviewers: andrewkr, IslamAbdelRahman, yiwu Reviewed By: yiwu Subscribers: leveldb, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D61503
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same 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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#pragma once
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#include <atomic>
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#include <deque>
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#include <limits>
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#include <set>
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#include <utility>
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#include <vector>
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#include <string>
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#include "db/column_family.h"
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#include "db/dbformat.h"
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#include "db/flush_scheduler.h"
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#include "db/internal_stats.h"
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#include "db/job_context.h"
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#include "db/log_writer.h"
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#include "db/memtable_list.h"
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#include "db/snapshot_impl.h"
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#include "db/version_edit.h"
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#include "db/write_controller.h"
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#include "db/write_thread.h"
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#include "port/port.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "rocksdb/memtablerep.h"
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#include "rocksdb/transaction_log.h"
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#include "table/scoped_arena_iterator.h"
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#include "util/autovector.h"
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#include "util/event_logger.h"
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#include "util/instrumented_mutex.h"
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#include "util/stop_watch.h"
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#include "util/thread_local.h"
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namespace rocksdb {
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class MemTable;
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class TableCache;
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class Version;
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class VersionEdit;
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class VersionSet;
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class Arena;
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class FlushJob {
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public:
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// TODO(icanadi) make effort to reduce number of parameters here
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// IMPORTANT: mutable_cf_options needs to be alive while FlushJob is alive
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FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
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const DBOptions& db_options,
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const MutableCFOptions& mutable_cf_options,
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const EnvOptions& env_options, VersionSet* versions,
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InstrumentedMutex* db_mutex, std::atomic<bool>* shutting_down,
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std::vector<SequenceNumber> existing_snapshots,
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SequenceNumber earliest_write_conflict_snapshot,
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JobContext* job_context, LogBuffer* log_buffer,
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Directory* db_directory, Directory* output_file_directory,
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CompressionType output_compression, Statistics* stats,
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EventLogger* event_logger, bool measure_io_stats);
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~FlushJob();
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// Require db_mutex held
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void PickMemTable();
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Status Run(FileMetaData* file_meta = nullptr);
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TableProperties GetTableProperties() const { return table_properties_; }
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private:
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void ReportStartedFlush();
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void ReportFlushInputSize(const autovector<MemTable*>& mems);
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void RecordFlushIOStats();
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Status WriteLevel0Table();
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const std::string& dbname_;
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ColumnFamilyData* cfd_;
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const DBOptions& db_options_;
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const MutableCFOptions& mutable_cf_options_;
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const EnvOptions& env_options_;
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VersionSet* versions_;
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InstrumentedMutex* db_mutex_;
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std::atomic<bool>* shutting_down_;
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std::vector<SequenceNumber> existing_snapshots_;
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SequenceNumber earliest_write_conflict_snapshot_;
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JobContext* job_context_;
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LogBuffer* log_buffer_;
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Directory* db_directory_;
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Directory* output_file_directory_;
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CompressionType output_compression_;
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Statistics* stats_;
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EventLogger* event_logger_;
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TableProperties table_properties_;
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bool measure_io_stats_;
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// Variables below are set by PickMemTable():
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FileMetaData meta_;
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autovector<MemTable*> mems_;
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VersionEdit* edit_;
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Version* base_;
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bool pick_memtable_called;
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};
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} // namespace rocksdb
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