95305c44a1
Summary: As disscussed in (https://github.com/facebook/rocksdb/issues/9223), Here added a new API named DB::OpenAndTrimHistory, this API will open DB and trim data to the timestamp specofied by **trim_ts** (The data with newer timestamp than specified trim bound will be removed). This API should only be used at a timestamp-enabled db instance recovery. And this PR implemented a new iterator named HistoryTrimmingIterator to support trimming history with a new API named DB::OpenAndTrimHistory. HistoryTrimmingIterator wrapped around the underlying InternalITerator such that keys whose timestamps newer than **trim_ts** should not be returned to the compaction iterator while **trim_ts** is not null. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9410 Reviewed By: ltamasi Differential Revision: D34410207 Pulled By: riversand963 fbshipit-source-id: e54049dc234eccd673244c566b15df58df5a6236
64 lines
2.8 KiB
C++
64 lines
2.8 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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#pragma once
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#ifndef ROCKSDB_LITE
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#include "db/compaction/compaction_picker.h"
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namespace ROCKSDB_NAMESPACE {
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class FIFOCompactionPicker : public CompactionPicker {
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public:
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FIFOCompactionPicker(const ImmutableOptions& ioptions,
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const InternalKeyComparator* icmp)
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: CompactionPicker(ioptions, icmp) {}
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virtual Compaction* PickCompaction(
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const std::string& cf_name, const MutableCFOptions& mutable_cf_options,
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const MutableDBOptions& mutable_db_options, VersionStorageInfo* version,
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LogBuffer* log_buffer,
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SequenceNumber earliest_memtable_seqno = kMaxSequenceNumber) override;
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virtual Compaction* CompactRange(
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const std::string& cf_name, const MutableCFOptions& mutable_cf_options,
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const MutableDBOptions& mutable_db_options, VersionStorageInfo* vstorage,
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int input_level, int output_level,
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const CompactRangeOptions& compact_range_options,
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const InternalKey* begin, const InternalKey* end,
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InternalKey** compaction_end, bool* manual_conflict,
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uint64_t max_file_num_to_ignore, const std::string& trim_ts) override;
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// The maximum allowed output level. Always returns 0.
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virtual int MaxOutputLevel() const override { return 0; }
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virtual bool NeedsCompaction(
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const VersionStorageInfo* vstorage) const override;
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private:
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Compaction* PickTTLCompaction(const std::string& cf_name,
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const MutableCFOptions& mutable_cf_options,
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const MutableDBOptions& mutable_db_options,
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VersionStorageInfo* version,
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LogBuffer* log_buffer);
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Compaction* PickSizeCompaction(const std::string& cf_name,
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const MutableCFOptions& mutable_cf_options,
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const MutableDBOptions& mutable_db_options,
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VersionStorageInfo* version,
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LogBuffer* log_buffer);
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Compaction* PickCompactionToWarm(const std::string& cf_name,
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const MutableCFOptions& mutable_cf_options,
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const MutableDBOptions& mutable_db_options,
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VersionStorageInfo* version,
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LogBuffer* log_buffer);
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};
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} // namespace ROCKSDB_NAMESPACE
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#endif // !ROCKSDB_LITE
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