876d281592
Summary: The patch adds compaction filter support for wide-column entities by introducing a new `CompactionFilter` API called `FilterV3`. This API is called for regular key-values, merge operands, and wide-column entities as well. It is passed the existing value/operand or wide-column structure and it can update the value or columns or keep/delete/etc. the key-value as usual. For compatibility, the default implementation of `FilterV3` keeps all wide-column entities and falls back to calling `FilterV2` for plain old key-values and merge operands. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11196 Test Plan: `make check` Reviewed By: akankshamahajan15 Differential Revision: D43094147 Pulled By: ltamasi fbshipit-source-id: 75acabe9a35254f7f404ba6173ee9c2774382ebd |
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RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key-value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it especially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/main/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.
License
RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.