446b32cfc3
Summary: In this change, an option to set different paths for different column families is added. This option is set via cf_paths setting of ColumnFamilyOptions. This option will work in a similar fashion to db_paths setting. Cf_paths is a vector of Dbpath values which contains a pair of the absolute path and target size. Multiple levels in a Column family can go to different paths if cf_paths has more than one path. To maintain backward compatibility, if cf_paths is not specified for a column family, db_paths setting will be used. Note that, if db_paths setting is also not specified, RocksDB already has code to use db_name as the only path. Changes : 1) A new member "cf_paths" is added to ImmutableCfOptions. This is set, based on cf_paths setting of ColumnFamilyOptions and db_paths setting of ImmutableDbOptions. This member is used to identify the path information whenever files are accessed. 2) Validation checks are added for cf_paths setting based on existing checks for db_paths setting. 3) DestroyDB, PurgeObsoleteFiles etc. are edited to support multiple cf_paths. 4) Unit tests are added appropriately. Closes https://github.com/facebook/rocksdb/pull/3102 Differential Revision: D6951697 Pulled By: ajkr fbshipit-source-id: 60d2262862b0a8fd6605b09ccb0da32bb331787d
28 lines
977 B
C++
28 lines
977 B
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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#pragma once
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#include <string>
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#include "options/db_options.h"
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#include "rocksdb/env.h"
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#include "rocksdb/status.h"
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#include "rocksdb/types.h"
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namespace rocksdb {
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// use_fsync maps to options.use_fsync, which determines the way that
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// the file is synced after copying.
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extern Status CopyFile(Env* env, const std::string& source,
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const std::string& destination, uint64_t size,
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bool use_fsync);
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extern Status CreateFile(Env* env, const std::string& destination,
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const std::string& contents);
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extern Status DeleteSSTFile(const ImmutableDBOptions* db_options,
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const std::string& fname);
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} // namespace rocksdb
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