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Siying Dong af1746751f WriteBufferManager will not trigger flush if much data is already being flushed 
Summary:
Even if hard limit hits, flushing more memtable may not help cap the memory usage if already more than half data is scheduled for flush. Not triggering flush instead.
Closes https://github.com/facebook/rocksdb/pull/2469

Differential Revision: D5284249

Pulled By: siying

fbshipit-source-id: 8ab7ba1aba56a634dbe72b318fcab2093063972e
2017-06-21 10:41:37 -07:00
arcanist_util Fix arc setting for Facebook internal tools 2017-02-02 13:24:16 -08:00
buckifier update buckifer/TARGETS 2017-05-24 11:56:57 -07:00
build_tools fixed typo 2017-06-05 11:27:34 -07:00
cache Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
cmake/modules CMake: more MinGW fixes 2017-04-06 14:09:13 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Fix flush assertion with tsan 2017-06-20 16:43:44 -07:00
docs RocksDB 5.4.5 release blog post 2017-05-26 23:11:56 -07:00
env GNU C library for struct tm has 2 additional fields. 2017-06-13 04:41:35 -07:00
examples CMake: more MinGW fixes 2017-04-06 14:09:13 -07:00
hdfs New API for background work in single thread pool 2017-05-23 11:12:27 -07:00
include/rocksdb WriteBufferManager will not trigger flush if much data is already being flushed 2017-06-21 10:41:37 -07:00
java Create a MergeOperator for Cassandra Row Value 2017-06-16 14:27:00 -07:00
memtable WriteBufferManager will not trigger flush if much data is already being flushed 2017-06-21 10:41:37 -07:00
monitoring Sample number of reads per SST file 2017-06-12 07:12:08 -07:00
options Allow ignoring unknown options when loading options from a file 2017-06-13 16:58:01 -07:00
port Implement ReopenWritibaleFile on Windows and other fixes 2017-06-20 10:31:13 -07:00
table record index partition properties 2017-06-13 11:21:32 -07:00
third-party fixed typo 2017-06-13 16:58:01 -07:00
tools Remove pin_slice option by making it the default 2017-06-15 16:14:08 -07:00
util Implement ReopenWritibaleFile on Windows and other fixes 2017-06-20 10:31:13 -07:00
utilities Fix cassandra ASAN use-after-free 2017-06-20 13:27:16 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.deprecated_arcconfig Update ShipIt to honor TARGETS updates 2017-04-13 16:12:03 -07:00
.gitignore Simple blob file dumper 2017-05-23 10:42:59 -07:00
.travis.yml Force travis to build with clang on MacOS 2017-06-05 15:41:57 -07:00
appveyor.yml Rework test running script. 2017-04-05 11:39:20 -07:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
CMakeLists.txt Create a MergeOperator for Cassandra Row Value 2017-06-16 14:27:00 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
COPYING Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
DEFAULT_OPTIONS_HISTORY.md options.delayed_write_rate use the rate of rate_limiter by default. 2017-05-24 09:58:24 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Call RateLimiter for compaction reads 2017-06-13 14:56:46 -07:00
INSTALL.md cross-platform compatibility improvements 2017-05-15 16:15:38 -07:00
LANGUAGE-BINDINGS.md Adding Dlang to the list 2017-02-16 17:24:10 -08:00
LICENSE Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
Makefile Create a MergeOperator for Cassandra Row Value 2017-06-16 14:27:00 -07:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
README.md Appveyor badge to show master branch 2016-07-26 13:54:08 -07:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Create a MergeOperator for Cassandra Row Value 2017-06-16 14:27:00 -07:00
TARGETS Create a MergeOperator for Cassandra Row Value 2017-06-16 14:27:00 -07:00
thirdparty.inc Introduce XPRESS compresssion on Windows. (#1081) 2016-04-19 22:54:24 -07:00
USERS.md fixed typo 2017-06-13 16:58:01 -07:00
Vagrantfile Update Vagrant file (test internal phabricator workflow) 2016-10-28 15:39:19 -07:00
WINDOWS_PORT.md Commit both PR and internal code review changes 2015-07-07 16:58:20 -07:00

README.md

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

Build Status 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/