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Yueh-Hsuan Chiang 1d1a64f58a Move NeedsCompaction() from VersionStorageInfo to CompactionPicker 
Summary:
Move NeedsCompaction() from VersionStorageInfo to CompactionPicker
to allow different compaction strategy to have their own way to
determine whether doing compaction is necessary.

When compaction style is set to kCompactionStyleNone, then
NeedsCompaction() will always return false.

Test Plan:
export ROCKSDB_TESTS=Compact
./db_test

Reviewers: ljin, sdong, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D28719
2014-11-13 13:41:43 -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 Move NeedsCompaction() from VersionStorageInfo to CompactionPicker 2014-11-13 13:41:43 -08:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples remove unused target 2014-11-08 11:51:40 -08:00
hdfs DB::Open() to automatically increase thread pool size if it is smaller than max number of parallel compactions or flushes 2014-11-03 17:22:34 -08:00
helpers/memenv Turn -Wshadow back on 2014-11-06 11:14:28 -08:00
include Add concurrency to compacting SpatialDB 2014-11-13 16:34:29 -05:00
java Fix iOS compile with -Wshorten-64-to-32 2014-11-13 14:39:30 -05:00
linters Removed code which prevents arc lint from working properly. 2014-10-07 17:40:19 +02:00
port Fix iOS compile with -Wshorten-64-to-32 2014-11-13 14:39:30 -05:00
table Fix iOS compile with -Wshorten-64-to-32 2014-11-13 14:39:30 -05:00
third-party/rapidjson Fix a rapidjson compile error in mac. 2014-06-23 17:09:24 -06:00
tools Turn on -Wshorten-64-to-32 and fix all the errors 2014-11-11 16:47:22 -05:00
util Fix include 2014-11-13 14:47:54 -05:00
utilities Add concurrency to compacting SpatialDB 2014-11-13 16:34:29 -05:00
.arcconfig Improve/fix bugs for the cpp linter 2014-02-13 17:48:11 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Ignore IntelliJ idea project files and ignore java/out folder 2014-10-21 15:52:27 +01:00
.travis.yml Turn on -Wshadow 2014-11-07 12:57:08 -08:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
HISTORY.md Improve Backup Engine. 2014-11-13 09:51:41 -08:00
INSTALL.md Update INSTALL.md 2014-10-01 11:15:42 -07:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Turn on -Wshorten-64-to-32 and fix all the errors 2014-11-11 16:47:22 -05:00
PATENTS Fix the patent format 2013-10-16 15:37:32 -07:00
README.md Replaced "built on on earlier work" by "built on earlier work" in README.md 2014-09-17 01:16:17 -07:00
ROCKSDB_LITE.md RocksDBLite 2014-04-15 13:39:26 -07:00
Vagrantfile Package generation for Ubuntu and CentOS 2014-09-29 16:09:46 -07:00

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/