b6b9359ece
Summary: BYTES_WRITTEN accounting doesn't work with disabled WAL. For example, this is what we get in the LOG: ``` Cumulative writes: 9794K writes, 228M keys, 9794K commit groups, 1.0 writes per commit group, ingest: 0.00 GB, 0.00 MB/s ``` WAL bytes are tracked in a different statistic: https://github.com/facebook/rocksdb/blob/master/db/internal_stats.h#L105. BYTES_WRITTEN should count all the writes. Closes https://github.com/facebook/rocksdb/pull/2133 Differential Revision: D4880615 Pulled By: yiwu-arbug fbshipit-source-id: 8fd0b223099f3f5ad7df79d4e737d313687fec69
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/