A library that provides an embeddable, persistent key-value store for fast storage.
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Yi Wu 07bdcb91fe New WriteImpl to pipeline WAL/memtable write
Summary:
PipelineWriteImpl is an alternative approach to WriteImpl. In WriteImpl, only one thread is allow to write at the same time. This thread will do both WAL and memtable writes for all write threads in the write group. Pending writers wait in queue until the current writer finishes. In the pipeline write approach, two queue is maintained: one WAL writer queue and one memtable writer queue. All writers (regardless of whether they need to write WAL) will still need to first join the WAL writer queue, and after the house keeping work and WAL writing, they will need to join memtable writer queue if needed. The benefit of this approach is that
1. Writers without memtable writes (e.g. the prepare phase of two phase commit) can exit write thread once WAL write is finish. They don't need to wait for memtable writes in case of group commit.
2. Pending writers only need to wait for previous WAL writer finish to be able to join the write thread, instead of wait also for previous memtable writes.

Merging #2056 and #2058 into this PR.
Closes https://github.com/facebook/rocksdb/pull/2286

Differential Revision: D5054606

Pulled By: yiwu-arbug

fbshipit-source-id: ee5b11efd19d3e39d6b7210937b11cefdd4d1c8d
2017-05-19 14:26:42 -07:00
arcanist_util Fix arc setting for Facebook internal tools 2017-02-02 13:24:16 -08:00
buckifier internal_repo_rocksdb to build Java and RocksDB LITE 2017-04-12 15:13:41 -07:00
build_tools cross-platform compatibility improvements 2017-05-15 16:15:38 -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 New WriteImpl to pipeline WAL/memtable write 2017-05-19 14:26:42 -07:00
docs Core-local stats blog post 2017-05-16 11:07:58 -07:00
env Blob storage pr 2017-05-10 15:14:44 -07:00
examples CMake: more MinGW fixes 2017-04-06 14:09:13 -07:00
hdfs Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
include/rocksdb New WriteImpl to pipeline WAL/memtable write 2017-05-19 14:26:42 -07:00
java Fix the RocksJava Release on Windows 2017-05-15 12:37:01 -07:00
memtable Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
monitoring cross-platform compatibility improvements 2017-05-15 16:15:38 -07:00
options New WriteImpl to pipeline WAL/memtable write 2017-05-19 14:26:42 -07:00
port Fix mingw compilation with -DNDEBUG 2017-05-17 22:56:48 -07:00
table Remoe unused BlockBasedTable::compaction_optimized_ 2017-05-18 06:41:23 -07:00
third-party fixed typo 2017-05-16 11:07:58 -07:00
tools fixed typo 2017-05-16 11:07:58 -07:00
util fix unity test 2017-05-17 18:56:55 -07:00
utilities Suppress clang-analyzer false positive 2017-05-19 10:56:28 -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 add emacs tags file - etags 2017-05-18 07:56:28 -07:00
.travis.yml Fix travis java_test 2017-05-16 11:21:24 -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 define NDEBUG in CMake non-debug builds 2017-05-16 11:07:58 -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 Change the default of delayed slowdown value to 16MB/s 2017-02-01 20:39:17 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md New WriteImpl to pipeline WAL/memtable write 2017-05-19 14:26:42 -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 keep util/build_version.cc when make clean 2017-05-18 12:26:25 -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 Fix build error with blob DB. 2017-05-15 14:05:46 -07:00
TARGETS cross-platform compatibility improvements 2017-05-15 16:15:38 -07:00
thirdparty.inc Introduce XPRESS compresssion on Windows. (#1081) 2016-04-19 22:54:24 -07:00
USERS.md Update USERS.md add user Pika 2017-01-25 10:39:17 -08:00
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

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/