A library that provides an embeddable, persistent key-value store for fast storage.
Go to file
sdong 75d7075a8a Print info message about files need compaction for debuging purpose
Summary:
When there are files marked for compaction after compactions, print extra messages to help debugging. Example:

2015/06/08-23:12:55.212855 7ff5013ff700 [default] [JOB 121] Generated table #75: 54 keys, 4807 bytes (need compaction)

2015/06/08-23:12:55.556194 7ff5013ff700 (Original Log Time 2015/06/08-23:12:55.556160) [default] compacted to: base level 1 max bytes base
10240 files[0 1 9 32 12 0 0 0] max score 0.96 (2 files need compaction), MB/sec: 0.0 rd, 0.1 wr, level 2, files in(1, 3) out(5) MB in(0.0,
0.0) out(0.0), read-write-amplify(11.3) write-amplify(5.7) OK, records in: 40, records dropped: 0

Test Plan:
Run test and see LOG files.

valgrind test DBTest.TablePropertiesNeedCompactTest

Reviewers: rven, yhchiang, kradhakrishnan, IslamAbdelRahman, igor

Reviewed By: igor

Subscribers: yoshinorim, maykov, leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D39771
2015-06-09 11:23:29 -07:00
arcanist_util Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
build_tools Build for CYGWIN 2015-04-23 21:33:44 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Print info message about files need compaction for debuging purpose 2015-06-09 11:23:29 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples [API Change] Improve EventListener::OnFlushCompleted interface 2015-06-05 12:28:51 -07:00
hdfs Remove unused parameter in CancelAllBackgroundWork 2015-03-16 21:07:54 -07:00
include Use nullptr for default compaction_filter_factory 2015-06-08 16:34:26 -07:00
java Optimistic Transactions 2015-05-29 14:36:35 -07:00
port Build for CYGWIN 2015-04-23 21:33:44 -07:00
table Add TablePropertiesCollector::NeedCompact() to suggest DB to further compact output files 2015-06-05 20:18:21 -07:00
third-party Update COMMIT.md 2015-03-30 17:48:16 -07:00
tools [API Change] Improve EventListener::OnFlushCompleted interface 2015-06-05 12:28:51 -07:00
util Use nullptr for default compaction_filter_factory 2015-06-08 16:34:26 -07:00
utilities Use nullptr for default compaction_filter_factory 2015-06-08 16:34:26 -07:00
.arcconfig Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore run 'make check's rules (and even subtests) in parallel 2015-04-06 12:35:25 -07:00
.travis.yml Don't preinstall jemalloc in Travis 2015-04-24 18:43:07 -07:00
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
dockerbuild.sh moving dockerfile to root 2015-05-22 16:06:53 -07:00
HISTORY.md Fix hang when closing a DB after doing loads with WAL disabled. 2015-06-09 10:39:49 -07:00
INSTALL.md Optimize default compile to compilation platform by default 2014-12-15 11:29:41 +01:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Allow EventListener::OnCompactionCompleted to return CompactionJobStats. 2015-06-02 17:07:16 -07:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
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 Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Allow EventListener::OnCompactionCompleted to return CompactionJobStats. 2015-06-02 17:07:16 -07:00
USERS.md Update USERS.md 2015-05-04 15:27:59 -07:00
Vagrantfile RocksDB on FreeBSD support 2015-02-26 15:19:17 -08:00

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/