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Yi Wu 9a27ac5d89 Fix drop column family data race 
Summary:
A data race is caught by tsan_crash test between compaction and DropColumnFamily:
https://gist.github.com/yiwu-arbug/5a2b4baae05eeb99ae1719b650f30a44 Compaction checks if the column family has been dropped on each key input, while user can issue DropColumnFamily which updates cfd->dropped_, causing the data race. Fixing it by making cfd->dropped_ an atomic.
Closes https://github.com/facebook/rocksdb/pull/3250

Differential Revision: D6535991

Pulled By: yiwu-arbug

fbshipit-source-id: 5571df020beae7fa7db6fff5ad0d598f49962895
 		2017-12-11 13:57:48 -08:00
buckifier Remove `import` use from TARGETS 2017-11-30 15:27:34 -08:00
build_tools revert fbcode build behavior 2017-12-07 16:12:52 -08:00
cache fix gflags namespace 2017-12-01 10:42:05 -08:00
cmake add missing config checks to CMakeLists.txt 2017-11-30 22:57:00 -08:00
coverage Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
db Fix drop column family data race 2017-12-11 13:57:48 -08:00
docs Blog post for 5.8 release 2017-09-28 10:14:09 -07:00
env Suppress valgrind "unimplemented functionality" error 2017-11-15 14:28:34 -08:00
examples Pinnableslice examples and blog post 2017-08-24 12:26:07 -07:00
hdfs Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
include/rocksdb Preserve overlapping file endpoint invariant 2017-12-06 18:56:54 -08:00
java CMake cross platform Java support and add JNI to travis 2017-11-28 12:27:53 -08:00
memtable fix gflags namespace 2017-12-01 10:42:05 -08:00
monitoring Add a ticker stat for number of keys skipped during iteration 2017-11-20 21:26:37 -08:00
options Make Universal compaction options dynamic 2017-12-11 13:27:06 -08:00
port Fix a race condition in WindowsThread (port::Thread) 2017-12-07 13:42:53 -08:00
table table: Fix coverity issues 2017-12-07 11:57:36 -08:00
third-party Enable MSVC W4 with a few exceptions. Fix warnings and bugs 2017-10-19 10:57:12 -07:00
tools Fix clang-analyzer false-positive on ldb_cmd.cc 2017-12-06 22:58:46 -08:00
util WritePrepared Txn: stress test 2017-12-06 09:42:28 -08:00
utilities BlobDB: refactor DB open logic 2017-12-11 12:12:38 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Remove leftover references to phutil_module_cache 2017-08-23 12:12:21 -07:00
.travis.yml CMake cross platform Java support and add JNI to travis 2017-11-28 12:27:53 -08:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt gflags in cmake on linux 2017-12-01 18:28:24 -08:00
CODE_OF_CONDUCT.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
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 revert fbcode build behavior 2017-12-07 16:12:52 -08:00
INSTALL.md Default one to rocksdb:x64-windows 2017-09-28 16:12:24 -07:00
LANGUAGE-BINDINGS.md Add Elixir to the list of language bindings 2017-11-21 10:13:14 -08:00
LICENSE.Apache Change RocksDB License 2017-07-15 16:11:23 -07:00
LICENSE.leveldb Add back the LevelDB license file 2017-07-16 18:42:18 -07:00
Makefile Suppress valgrind "unimplemented functionality" error 2017-11-15 14:28:34 -08:00
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
TARGETS Remove `import` use from TARGETS 2017-11-30 15:27:34 -08:00
USERS.md Added ProfaneDB 2017-11-19 10:11:44 -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
appveyor.yml Add -DPORTABLE=1 to MSVC CI build 2017-08-31 16:42:48 -07:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
src.mk Fix TARGETS lint warnings. 2017-11-15 14:28:34 -08:00
thirdparty.inc Enable cacheline_aligned_alloc() to allocate from jemalloc if enabled. 2017-10-27 13:27:12 -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/