rocksdb

fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

Maysam Yabandeh 208556ee13 WritePrepared: fix Get without snapshot (#5664 ) Summary: if read_options.snapshot is not set, ::Get will take the last sequence number after taking a super-version and uses that as the sequence number. Theoretically max_eviceted_seq_ could advance this sequence number. This could lead ::IsInSnapshot that will be invoked by the ReadCallback to notice the absence of the snapshot. In this case, the ReadCallback should have passed a non-value to snap_released so that it could be set by the ::IsInSnapshot. The patch does that, and adds a unit test to verify it. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5664 Differential Revision: D16614033 Pulled By: maysamyabandeh fbshipit-source-id: 06fb3fd4aacd75806ed1a1acec7961f5d02486f2		5 years ago
buckifier	Change buckifier to support parameterized dependencies (#5648 )	5 years ago
build_tools	Upload db directory during cleanup for certain tests (#5554 )	5 years ago
cache	Cleaned up and simplified LRU cache implementation (#5579 )	5 years ago
cmake	Make FindZLIB consistent with official definitions (#4823 )	6 years ago
coverage	Fix interpreter lines for files with python2-only syntax.	5 years ago
db	Fix duplicated file names in PurgeObsoleteFiles (#5603 )	5 years ago
docs	Text lint all .gitignore files	6 years ago
env	fix sign compare warnings (#5651 )	5 years ago
examples	simplify include directive involving inttypes (#5402 )	6 years ago
file	Fix duplicated file names in PurgeObsoleteFiles (#5603 )	5 years ago
hdfs	Add copyright headers per FB open-source checkup tool. (#5199 )	6 years ago
include/rocksdb	WritePrepared: fix Get without snapshot (#5664 )	5 years ago
java	WritePrepared: fix Get without snapshot (#5664 )	5 years ago
logging	Auto Roll Logger to add some extra checking to avoid segfault. (#5623 )	5 years ago
memory	Move some logging related files to logging/ (#5387 )	6 years ago
memtable	simplify include directive involving inttypes (#5402 )	6 years ago
monitoring	WritePrepared: fix Get without snapshot (#5664 )	5 years ago
options	The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293 )	5 years ago
port	fix sign compare warnings (#5651 )	5 years ago
table	Move the uncompression dictionary object out of the block cache (#5584 )	5 years ago
test_util	Added support for sequential read-ahead file (#5580 )	5 years ago
third-party/gtest-1.7.0/fused-src/gtest	remove bundled but unused fbson library (#5108 )	6 years ago
tools	Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610 )	5 years ago
trace_replay	Block cache analyzer: Compute correlation of features and human readable trace file. (#5596 )	5 years ago
util	Avoid user key copying for Get/Put/Write with user-timestamp (#5502 )	5 years ago
utilities	WritePrepared: fix Get without snapshot (#5664 )	5 years ago
.clang-format	A script that automatically reformat affected lines	11 years ago
.gitignore	Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610 )	5 years ago
.lgtm.yml	Create lgtm.yml for LGTM.com C/C++ analysis (#4058 )	6 years ago
.travis.yml	Switch Travis to Xenial build (#4789 )	5 years ago
.watchmanconfig	Added .watchmanconfig file to rocksdb repo (#5593 )	5 years ago
AUTHORS	Update RocksDB Authors File	7 years ago
CMakeLists.txt	Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610 )	5 years ago
CODE_OF_CONDUCT.md	Add Code of Conduct	7 years ago
CONTRIBUTING.md	Add Code of Conduct	7 years ago
COPYING	Add GPLv2 as an alternative license.	8 years ago
DEFAULT_OPTIONS_HISTORY.md	options.delayed_write_rate use the rate of rate_limiter by default.	8 years ago
DUMP_FORMAT.md	First version of rocksdb_dump and rocksdb_undump.	10 years ago
HISTORY.md	Improve CPU Efficiency of ApproximateSize (part 2) (#5609 )	5 years ago
INSTALL.md	Update the version of the dependencies used by the RocksJava static build (#4761 )	6 years ago
LANGUAGE-BINDINGS.md	LANGUAGE-BINDINGS.md: mention python-rocksdb	6 years ago
LICENSE.Apache	Change RocksDB License	7 years ago
LICENSE.leveldb	Add back the LevelDB license file	7 years ago
Makefile	Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610 )	5 years ago
README.md	Add LevelDB repository link in the Readme	6 years ago
ROCKSDB_LITE.md	Fix some typos in comments and docs.	7 years ago
TARGETS	Change buckifier to support parameterized dependencies (#5648 )	5 years ago
USERS.md	Add Alluxio to USERS.md (#5434 )	6 years ago
Vagrantfile	Adding CentOS 7 Vagrantfile & build script	7 years ago
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 )	6 years ago
appveyor.yml	Also build compression libraries on AppVeyor CI (#5226 )	5 years ago
defs.bzl	Change buckifier to support parameterized dependencies (#5648 )	5 years ago
issue_template.md	Add a template for issues	7 years ago
src.mk	Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610 )	5 years ago
thirdparty.inc	Fix build jemalloc api (#5470 )	5 years ago

README.md

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

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/

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.