534c255c7a
Summary: Major changes in this PR: * Implement CassandraCompactionFilter to remove expired columns and rows (if all column expired) * Move cassandra related code from utilities/merge_operators/cassandra to utilities/cassandra/* * Switch to use shared_ptr<> from uniqu_ptr for Column membership management in RowValue. Since columns do have multiple owners in Merge and GC process, use shared_ptr helps make RowValue immutable. * Rename cassandra_merge_test to cassandra_functional_test and add two TTL compaction related tests there. Closes https://github.com/facebook/rocksdb/pull/2588 Differential Revision: D5430010 Pulled By: wpc fbshipit-source-id: 9566c21e06de17491d486a68c70f52d501f27687
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
// Copyright (c) 2017-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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// This source code is also licensed under the GPLv2 license found in the
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// COPYING file in the root directory of this source tree.
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#pragma once
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#include "rocksdb/merge_operator.h"
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#include "rocksdb/slice.h"
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namespace rocksdb {
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namespace cassandra {
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/**
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* A MergeOperator for rocksdb that implements Cassandra row value merge.
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*/
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class CassandraValueMergeOperator : public MergeOperator {
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public:
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static std::shared_ptr<MergeOperator> CreateSharedInstance();
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virtual bool FullMergeV2(const MergeOperationInput& merge_in,
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MergeOperationOutput* merge_out) const override;
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virtual bool PartialMerge(const Slice& key,
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const Slice& left_operand,
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const Slice& right_operand,
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std::string* new_value,
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Logger* logger) const override;
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virtual bool PartialMergeMulti(const Slice& key,
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const std::deque<Slice>& operand_list,
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std::string* new_value,
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Logger* logger) const override;
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virtual const char* Name() const override;
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};
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} // namespace cassandra
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} // namespace rocksdb
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