A library that provides an embeddable, persistent key-value store for fast storage.
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Zhongyi Xie ad05cbb182 DB:Open should fail on tmpfs when use_direct_reads=true
Summary:
Before:

> $ TEST_TMPDIR=/dev/shm ./db_bench -use_direct_reads=true -benchmarks=readrandomwriterandom -num=10000000 -reads=100000 -write_buffer_size=1048576 -target_file_size_base=1048576 -max_bytes_for_level_base=4194304 -max_background_jobs=12 -readwritepercent=50 -key_size=16 -value_size=48 -threads=32
DB path: [/dev/shm/dbbench]
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
db_bench: tpp.c:84: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= fifo_min_prio && new_prio <= fifo_max_prio)' failed.
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument
put error: IO error: While open a file for random read: /dev/shm/dbbench/000007.sst: Invalid argument

After:
> TEST_TMPDIR=/dev/shm ./db_bench -use_direct_reads=true -benchmarks=readrandomwriterandom -num=10000000 -reads=100000 -write_buffer_size=1048576 -target_file_size_base=1048576 -max_bytes_for_level_base=4194304 -max_background_jobs=12 -readwritepercent=50 -key_size=16 -value_size=48 -threads=32
Initializing RocksDB Options from the specified file
Initializing RocksDB Options from command-line flags
open error: Not implemented: Direct I/O is not supported by the specified DB.
Closes https://github.com/facebook/rocksdb/pull/3539

Differential Revision: D7082658

Pulled By: miasantreble

fbshipit-source-id: f9d9c6ec3b5e9e049cab52154940ee101ba4d342
2018-02-26 14:58:06 -08:00
buckifier Suppress lint in old files 2018-01-29 12:56:42 -08:00
build_tools Legocastle job to report lite build binary size to scuba 2018-02-15 17:27:24 -08:00
cache Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
cmake add missing config checks to CMakeLists.txt 2017-11-30 22:57:00 -08:00
coverage Suppress lint in old files 2018-01-29 12:56:42 -08:00
db DB:Open should fail on tmpfs when use_direct_reads=true 2018-02-26 14:58:06 -08:00
docs Adding blog post for 5.10.2 release 2018-02-13 11:56:59 -08:00
env Fix the Logger::Close() and DBImpl::Close() design pattern 2018-02-23 13:57:26 -08:00
examples Pinnableslice examples and blog post 2017-08-24 12:26:07 -07:00
hdfs Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
include/rocksdb Fix the Logger::Close() and DBImpl::Close() design pattern 2018-02-23 13:57:26 -08:00
java Java: Add copy constructors for various option classes 2018-02-02 10:57:28 -08:00
memtable Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
monitoring Compilation fixes for powerpc build, -Wparentheses-equality error and missing header guards 2018-02-09 14:12:43 -08:00
options RocksDBOptionsParser::Parse()'s ignore_unknown_options argument only ingores options from higher version. 2018-02-22 13:28:12 -08:00
port Fix a memory leak in WindowsThread 2018-02-26 13:46:12 -08:00
table Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
third-party Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
tools Back out "[codemod] - comment out unused parameters" 2018-02-22 12:43:17 -08:00
util Fix the Logger::Close() and DBImpl::Close() design pattern 2018-02-23 13:57:26 -08:00
utilities WritePrepared Txn: optimize SubBatchCnt 2018-02-22 18:12:26 -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
appveyor.yml Upgrade Appveyor to VS2017 2018-02-01 13:57:01 -08:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt CMake changes for CRC32 Optimization on PowerPC 2018-01-23 16:57:11 -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 Update HISTORY.md to 5.12.0 2018-02-22 16:47:01 -08:00
INSTALL.md FreeBSD build support for RocksDB and RocksJava 2018-01-11 13:29:55 -08:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
LANGUAGE-BINDINGS.md Add Nim to the list of language bindings 2018-01-29 09:57:46 -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 UBSAN error in finer guanularity 2018-02-13 12:18:07 -08:00
README.md Add Jenkins for PPC64le build status badge 2018-01-11 14:57:45 -08:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Refactor ReadBlockContents() 2017-12-11 15:27:32 -08:00
TARGETS WritePrepared Txn: make buck tests parallel 2017-12-18 14:42:09 -08:00
thirdparty.inc Make Windows dep switches compatible with other builds 2018-01-05 14:56:54 -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

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

Linux/Mac Build Status Windows Build status PPC64le 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/