1a2cc27e01
Summary: The pre-existing code is trying to clamp between 65,536 and 0, resulting in clamping to 65,536, resulting in very small buffers, resulting in ShouldFlushNow() being true quite easily, resulting in assertion failing and database performance being "not what it should be". https://github.com/facebook/rocksdb/issues/1018 Test Plan: make check Reviewers: sdong, andrewkr, IslamAbdelRahman, yhchiang, igor Reviewed By: igor Subscribers: leveldb, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D55455
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/