e3a06f12d2
Summary: Add snapshot_checker check whenever we need to check sequence against snapshots and decide what to do with an input key. The changes are related to one of: * compaction filter * single delete * delete at bottom level * merge Closes https://github.com/facebook/rocksdb/pull/3251 Differential Revision: D6537850 Pulled By: yiwu-arbug fbshipit-source-id: 3faba40ed5e37779f4a0cb7ae78af9546659c7f2
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 specially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/master/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.
Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/