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sdong 0ab0242f37 VersionBuilder to use unordered set and map to store added and deleted files 
Summary: Set operations in VerisonBuilder is shown as a performance bottleneck of restarting DB when there are lots of files. Make both of added_files and deleted_files use unordered set or map. Only when adding the files, sort the added files.

Test Plan: make all check

Reviewers: yhchiang, rven, igor

Reviewed By: igor

Subscribers: hermanlee4, leveldb, dhruba, ljin

Differential Revision: https://reviews.facebook.net/D30051
2014-12-10 18:53:30 -08:00
build_tools Turn on -Wshorten-64-to-32 and fix all the errors 2014-11-11 16:47:22 -05:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db VersionBuilder to use unordered set and map to store added and deleted files 2014-12-10 18:53:30 -08:00
doc
examples Add rocksdb::ToString() to address cases where std::to_string is not available. 2014-11-24 20:44:49 -08:00
hdfs Replace exception by abort() in dummy HdfsEnv implementation. 2014-12-05 13:30:57 -08:00
helpers/memenv Turn -Wshadow back on 2014-11-06 11:14:28 -08:00
include Fix calculation of max_total_wal_size in db_options_.max_total_wal_size == 0 case 2014-12-08 15:26:35 -08:00
java Merge pull request #422 from fyrz/RocksJava-Quality-Improvements 2014-12-05 21:38:05 -08:00
linters Fix linters 2014-12-02 13:53:39 -05:00
port Add rocksdb::ToString() to address cases where std::to_string is not available. 2014-11-24 20:44:49 -08:00
table Enforce write buffer memory limit across column families 2014-12-02 12:09:20 -08:00
third-party/rapidjson
tools add range scan test to benchmark script 2014-12-10 13:04:58 -08:00
util Fix #434 2014-12-09 10:22:07 -08:00
utilities Clean up StringSplit 2014-11-21 11:05:28 -05:00
.arcconfig
.clang-format
.gitignore Ignore IntelliJ idea project files and ignore java/out folder 2014-10-21 15:52:27 +01:00
.travis.yml Don't parallelize the build in travis 2014-11-14 16:23:56 -08:00
AUTHORS
CONTRIBUTING.md
HISTORY.md Update HISTORY.md for release 3.9 2014-12-08 15:19:48 -08:00
INSTALL.md
LICENSE
Makefile Add -fno-exceptions flag to ROCKSDB_LITE. 2014-12-05 21:34:20 -08:00
PATENTS
README.md
ROCKSDB_LITE.md
Vagrantfile

README.md

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

Build Status

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/