rocksdb

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

Akanksha Mahajan 552fd765b3 Add IOTracer reader, writer classes for reading/writing IO operations in a binary file (#6958 ) Summary: 1. As part of IOTracing project, Add a class IOTracer, IOTraceReader and IOTracerWriter that writes the file operations information in a binary file. IOTrace Record contains record information and right now it contains access_timestamp, file_operation, file_name, io_status, len, offset and later other options will be added when file system APIs will be call IOTracer. 2. Add few unit test cases that verify that reading and writing to a IO Trace file is working properly and before start trace and after ending trace nothing is added to the binary file. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6958 Test Plan: 1. make check -j64 2. New testcases for IOTracer. Reviewed By: anand1976 Differential Revision: D21943375 Pulled By: akankshamahajan15 fbshipit-source-id: 3532204e2a3eab0104bf411ab142e3fdd4fbce54		5 years ago
.circleci	Circle CI's clang build to really use clang (#6965 )	5 years ago
.github/workflows	Clean up some code related to file checksums (#6861 )	5 years ago
buckifier	Directly use unit test tempalte buck (#6926 )	5 years ago
build_tools	build fixes for GNU/kFreeBSD (#6992 )	5 years ago
cache	Revert "Update googletest from 1.8.1 to 1.10.0 (#6808 )" (#6923 )	5 years ago
cmake	Add `find_dependency()` in cmake config file. (#6791 )	5 years ago
coverage	Find the correct gcov (#6904 )	5 years ago
db	Fix a bug that causes iterator to return wrong result in a rare data race (#6973 )	5 years ago
db_stress_tool	add `CompactionFilter` to stress/crash tests (#6988 )	5 years ago
docs	Log warning for high bits/key in legacy Bloom filter (#6312 )	5 years ago
env	build fixes for GNU/kFreeBSD (#6992 )	5 years ago
examples	Add missing my_pid to fprintf in multi_process_example (#6731 )	5 years ago
file	Ingest SST files with checksum information (#6891 )	5 years ago
hdfs	fix build with 'USE_HDFS' on windows (#6950 )	5 years ago
include/rocksdb	Store DB identity and DB session ID in SST files (#6983 )	5 years ago
java	Add logs and stats in DeleteScheduler (#6927 )	5 years ago
logging	Fix info log source file display length (#5824 )	5 years ago
memory	C++20 compatibility (#6697 )	5 years ago
memtable	Fix more defects reported by Coverity Scan (#6935 )	5 years ago
monitoring	Add logs and stats in DeleteScheduler (#6927 )	5 years ago
options	make L0 index/filter pinned memory usage predictable (#6911 )	5 years ago
port	build fixes for GNU/kFreeBSD (#6992 )	5 years ago
table	Fix the bug that compressed cache is disabled in read-only DBs (#6990 )	5 years ago
test_util	Check iterator status BlockBasedTableReader::VerifyChecksumInBlocks() (#6909 )	5 years ago
third-party	Revert "Update googletest from 1.8.1 to 1.10.0 (#6808 )" (#6923 )	5 years ago
tools	add `CompactionFilter` to stress/crash tests (#6988 )	5 years ago
trace_replay	Add IOTracer reader, writer classes for reading/writing IO operations in a binary file (#6958 )	5 years ago
util	Make it able to lower cpu priority to specific level in threadpool (#6969 )	5 years ago
utilities	Fix persistent cache on windows (#6932 )	5 years ago
.clang-format	A script that automatically reformat affected lines	11 years ago
.gitignore	Allow missing "unversioned" python, as in CentOS 8 (#6883 )	5 years ago
.lgtm.yml	Create lgtm.yml for LGTM.com C/C++ analysis (#4058 )	7 years ago
.travis.yml	Make sure core components not depend on gtest (#6921 )	5 years ago
.watchmanconfig	Added .watchmanconfig file to rocksdb repo (#5593 )	6 years ago
AUTHORS	Update RocksDB Authors File	7 years ago
CMakeLists.txt	build fixes for GNU/kFreeBSD (#6992 )	5 years ago
CODE_OF_CONDUCT.md	Adopt Contributor Covenant	5 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	Fix a bug that causes iterator to return wrong result in a rare data race (#6973 )	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	8 years ago
LICENSE.leveldb	Add back the LevelDB license file	8 years ago
Makefile	Add IOTracer reader, writer classes for reading/writing IO operations in a binary file (#6958 )	5 years ago
README.md	Add Slack forum to README (#6773 )	5 years ago
ROCKSDB_LITE.md	Fix some typos in comments and docs.	7 years ago
TARGETS	Add IOTracer reader, writer classes for reading/writing IO operations in a binary file (#6958 )	5 years ago
USERS.md	Add YugabyteDB to USERS (#6786 )	5 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	Reduce test coverage in older VS versions (#6966 )	5 years ago
defs.bzl	Make testpilot recognize that these tests have coverage instrumentation	5 years ago
issue_template.md	Add Google Group to Issue Template	5 years ago
src.mk	Add IOTracer reader, writer classes for reading/writing IO operations in a binary file (#6958 )	5 years ago
thirdparty.inc	Fix build jemalloc api (#5470 )	6 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 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/ and https://rocksdb.slack.com/

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.