A library that provides an embeddable, persistent key-value store for fast storage.
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Peter Dillinger 4d1ac19e3d aggregated-table-properties with GetMapProperty (#7779)
Summary:
So that we can more easily get aggregate live table data such
as total filter, index, and data sizes.

Also adds ldb support for getting properties

Also fixed some missing/inaccurate related comments in db.h

For example:

    $ ./ldb --db=testdb get_property rocksdb.aggregated-table-properties
    rocksdb.aggregated-table-properties.data_size: 102871
    rocksdb.aggregated-table-properties.filter_size: 0
    rocksdb.aggregated-table-properties.index_partitions: 0
    rocksdb.aggregated-table-properties.index_size: 2232
    rocksdb.aggregated-table-properties.num_data_blocks: 100
    rocksdb.aggregated-table-properties.num_deletions: 0
    rocksdb.aggregated-table-properties.num_entries: 15000
    rocksdb.aggregated-table-properties.num_merge_operands: 0
    rocksdb.aggregated-table-properties.num_range_deletions: 0
    rocksdb.aggregated-table-properties.raw_key_size: 288890
    rocksdb.aggregated-table-properties.raw_value_size: 198890
    rocksdb.aggregated-table-properties.top_level_index_size: 0
    $ ./ldb --db=testdb get_property rocksdb.aggregated-table-properties-at-level1
    rocksdb.aggregated-table-properties-at-level1.data_size: 80909
    rocksdb.aggregated-table-properties-at-level1.filter_size: 0
    rocksdb.aggregated-table-properties-at-level1.index_partitions: 0
    rocksdb.aggregated-table-properties-at-level1.index_size: 1787
    rocksdb.aggregated-table-properties-at-level1.num_data_blocks: 81
    rocksdb.aggregated-table-properties-at-level1.num_deletions: 0
    rocksdb.aggregated-table-properties-at-level1.num_entries: 12466
    rocksdb.aggregated-table-properties-at-level1.num_merge_operands: 0
    rocksdb.aggregated-table-properties-at-level1.num_range_deletions: 0
    rocksdb.aggregated-table-properties-at-level1.raw_key_size: 238210
    rocksdb.aggregated-table-properties-at-level1.raw_value_size: 163414
    rocksdb.aggregated-table-properties-at-level1.top_level_index_size: 0
    $

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7779

Test Plan: Added a test to ldb_test.py

Reviewed By: jay-zhuang

Differential Revision: D25653103

Pulled By: pdillinger

fbshipit-source-id: 2905469a08a64dd6b5510cbd7be2e64d3234d6d3
2020-12-19 08:00:14 -08:00
.circleci Fix failing RocksJava test compilation and add CI (#7769) 2020-12-16 16:00:02 -08:00
.github/workflows Update clang-format-diff.py (#7609) 2020-11-04 16:09:01 -08:00
buckifier Fix use of positional args in BUCK rules (#7760) 2020-12-09 19:25:31 -08:00
build_tools RocksJava static lib dependencies should support MacOS 10.12+ (#7683) 2020-11-17 15:34:05 -08:00
cache Fix typos in comments (#7687) 2020-11-19 13:32:50 -08:00
cmake Add find_dependency() in cmake config file. (#6791) 2020-05-12 21:18:29 -07:00
coverage Find the correct gcov (#6904) 2020-06-01 16:33:05 -07:00
db aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -08:00
db_stress_tool Inject the random write error to stress test (#7653) 2020-12-17 11:52:28 -08:00
docs Update github-pages to v207 (#7235) 2020-08-12 09:26:24 -07:00
env Eliminate possible race between LockFile() vs UnlockFile() (#7721) 2020-12-10 09:35:11 -08:00
examples Bring the Configurable options together (#5753) 2020-09-14 17:01:01 -07:00
file Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
fuzz Update SstFileWriter fuzzer to iterate and check all key-value pairs (#7761) 2020-12-11 16:09:10 -08:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -08:00
java Fix various small build issues, Java API naming (#7776) 2020-12-18 16:12:26 -08:00
logging Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
memory slightly improve jemalloc allocator API header (#7592) 2020-10-28 13:47:12 -07:00
memtable Test for LoadLatestOptions (#7554) 2020-10-14 22:28:55 -07:00
monitoring Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
options Hack to load OPTIONS file for read_amp_bytes_per_bit (#7659) 2020-11-13 11:52:50 -08:00
port Fix various small build issues, Java API naming (#7776) 2020-12-18 16:12:26 -08:00
table aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -08:00
test_util Add further tests to ASSERT_STATUS_CHECKED (2) (#7698) 2020-12-09 21:21:16 -08:00
third-party Fix Compilation on ppc64le using Clang 11 (#7713) 2020-12-01 11:21:44 -08:00
tools aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -08:00
trace_replay Genericize and clean up FastRange (#7436) 2020-09-28 11:35:00 -07:00
util Support optimize_filters_for_memory for Ribbon filter (#7774) 2020-12-18 14:31:03 -08:00
utilities Inject the random write error to stress test (#7653) 2020-12-17 11:52:28 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Fuzzing RocksDB (#7685) 2020-11-17 12:56:48 -08:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Migrate away from broken macos on Travis (#7745) 2020-12-04 23:24:27 -08:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
appveyor.yml Remove 2019 from appveyor (#7038) 2020-06-29 14:31:41 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt LockTree library, originally from PerconaFT (#7753) 2020-12-09 12:10:57 -08:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
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
defs.bzl Make testpilot recognize that these tests have coverage instrumentation 2020-03-20 11:23:23 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -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
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Add RestoreDBFromLatestBackup to C API, add new C# package (#7092) 2020-07-08 11:56:41 -07:00
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 Fix various small build issues, Java API naming (#7776) 2020-12-18 16:12:26 -08:00
README.md Fix the CI badge for ppc64le Jenkins (#7561) 2020-10-16 09:00:56 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk LockTree library, originally from PerconaFT (#7753) 2020-12-09 12:10:57 -08:00
TARGETS Fix use of positional args in BUCK rules (#7760) 2020-12-09 19:25:31 -08:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md add ArangoDB to USERS.md, and fix typos in that file (#7675) 2020-11-16 18:29:51 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
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

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

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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.