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Levi Tamasi 8637bc1eea Fix the description of unordered_write in db_bench (#6476)
Summary:
As reported in https://github.com/facebook/rocksdb/issues/6467, the
description of the `unordered_write` switch of `db_bench` was incorrect.
(Note: the new description is based on
https://rocksdb.org/blog/2019/08/15/unordered-write.html).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6476

Test Plan: `db_bench --help`

Differential Revision: D20200653

Pulled By: ltamasi

fbshipit-source-id: 4c3683fcfa6a069164167af5aaff9974a810c16a
2020-03-02 15:34:19 -08:00
buckifier Buck config: Re-enable liburing under Linux (#6451) 2020-02-24 15:47:34 -08:00
build_tools fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
cache Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
cmake cmake: do not build tests for Release build and cleanups (#5916) 2019-12-13 12:48:06 -08:00
coverage Fix interpreter lines for files with python2-only syntax. 2019-07-09 10:51:37 -07:00
db fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
db_stress_tool support SstFileManager in db_stress (#6454) 2020-02-25 16:45:30 -08:00
docs Log warning for high bits/key in legacy Bloom filter (#6312) 2020-01-17 19:37:35 -08:00
env Add more unit test coverage to MultiRead (#6452) 2020-02-28 16:42:44 -08:00
examples Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
hdfs Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
include/rocksdb Update release version to 6.8 (#6450) 2020-02-24 11:44:47 -08:00
java fix assert error while db.getDefaultColumnFamily().getDescriptor() (#6006) 2020-02-27 12:37:46 -08:00
logging Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
memory Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
memtable Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
monitoring Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
options Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
port Share kPageSize (and other small tweaks) (#6443) 2020-02-22 08:01:36 -08:00
table fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
test_util Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
third-party Apply formatter to some recent commits (#6138) 2019-12-09 15:49:49 -08:00
tools Fix the description of unordered_write in db_bench (#6476) 2020-03-02 15:34:19 -08:00
trace_replay Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
util Misc filter_bench improvements (#6444) 2020-02-21 13:31:57 -08:00
utilities fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
.clang-format
.gitignore Ignore compile_commands.json file (#6472) 2020-03-02 12:54:13 -08:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS
CMakeLists.txt Add blob file state to VersionEdit (#6416) 2020-02-24 18:39:53 -08:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
CONTRIBUTING.md
COPYING
DEFAULT_OPTIONS_HISTORY.md
DUMP_FORMAT.md
HISTORY.md Fix range deletion tombstone ingestion with global seqno (#6429) 2020-02-25 15:31:48 -08:00
INSTALL.md Update the version of the dependencies used by the RocksJava static build (#4761) 2018-12-18 20:25:43 -08:00
LANGUAGE-BINDINGS.md LANGUAGE-BINDINGS.md: mention python-rocksdb 2019-03-20 11:10:48 -07:00
LICENSE.Apache
LICENSE.leveldb
Makefile fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
README.md Replaced some words (#5877) 2019-10-07 12:28:09 -07:00
ROCKSDB_LITE.md
TARGETS Add blob file state to VersionEdit (#6416) 2020-02-24 18:39:53 -08:00
USERS.md add user nebula (#6271) 2020-01-08 13:46:43 -08:00
Vagrantfile
WINDOWS_PORT.md #5145 , rename port/dirent.h to port/port_dirent.h to avoid compile err when use port dir as header dir output (#5152) 2019-04-04 11:38:19 -07:00
appveyor.yml Don't download from (unreliable) maven.org (#6348) 2020-01-30 11:02:08 -08:00
defs.bzl Add clarifying/instructive header to TARGETS and defs.bzl 2019-11-05 20:20:33 -08:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
src.mk Add blob file state to VersionEdit (#6416) 2020-02-24 18:39:53 -08:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00

README.md

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 especially 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/

License

RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.