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Alan Paxton 6a8920f988 JNI native memory leak - release array elements (#10981)
Summary:
Closes https://github.com/facebook/rocksdb/issues/10980

Reproduced as per the suggestion in the ticket, and `$ jcmd <PID> VM.native_memory | grep Internal` reports that we are no longer leaking internal memory with the suggested fix.

I did the repro in `MultiGetTest.java` which I have optimized imports on. It did not seem helpful to leave the test code around as it would be onerous to build a memory leak reproducer, and regression seems a remote possibility.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10981

Reviewed By: riversand963

Differential Revision: D41498748

Pulled By: ajkr

fbshipit-source-id: 8c6dd0d608172879c8bda479c7c9c05c12d34e70
2022-12-14 10:49:32 -08:00
.circleci Upgrade CircleCI Windows Build (#10090) 2022-10-28 09:14:47 -07:00
.github/workflows ci: add GitHub token permissions for workflow (#10549) 2022-10-04 12:10:30 -07:00
buckifier Enable BLACK for internal_repo_rocksdb (#10710) 2022-09-20 17:47:52 -07:00
build_tools Print stack traces on frozen tests in CI (#10828) 2022-10-18 00:35:35 -07:00
cache Add a SecondaryCache::InsertSaved() API, use in CacheDumper impl (#10945) 2022-11-21 16:17:36 -08:00
cmake gcc-11 and cmake related cleanup (#9286) 2021-12-17 17:04:35 -08:00
coverage Enable BLACK for internal_repo_rocksdb (#10710) 2022-09-20 17:47:52 -07:00
db Revise LockWAL/UnlockWAL implementation (#11020) 2022-12-13 21:45:00 -08:00
db_stress_tool Revert PR 10777 "Fix FIFO causing overlapping seqnos in L0 files due to overla…" (#10999) 2022-11-29 10:56:42 -08:00
docs Bump nokogiri from 1.13.9 to 1.13.10 in /docs (#11024) 2022-12-08 09:21:36 -08:00
env Added placeholders for MADV defines (#10881) 2022-11-02 14:42:42 -07:00
examples Add rocksdb_backup_restore_example to examples/.gitignore (#10825) 2022-11-02 15:02:09 -07:00
file Fix db_stress failure in async_io in FilePrefetchBuffer (#10949) 2022-11-14 16:14:41 -08:00
fuzz Add some missing headers (#10519) 2022-08-11 12:45:50 -07:00
include/rocksdb Revise LockWAL/UnlockWAL implementation (#11020) 2022-12-13 21:45:00 -08:00
java JNI native memory leak - release array elements (#10981) 2022-12-14 10:49:32 -08:00
logging Observe and warn about misconfigured HyperClockCache (#10965) 2022-11-21 12:08:21 -08:00
memory Fix use of make_unique in Arena::AllocateNewBlock (#11012) 2022-12-01 13:18:40 -08:00
memtable Run clang format against files under example/, memory/ and memtable/ folders (#10893) 2022-10-28 13:16:50 -07:00
microbench Avoid allocations/copies for large `GetMergeOperands()` results (#10458) 2022-08-04 00:42:13 -07:00
monitoring Add an unittest for Periodic compaction conflict with ongoing compaction (#10908) 2022-12-12 10:37:55 -08:00
options Ignore max_compaction_bytes for compaction input that are within output key-range (#10835) 2022-10-21 10:22:41 -07:00
plugin Add initial CMake support to plugin (#9214) 2021-11-30 17:16:53 -08:00
port Fix include of windows.h in mmap.h (#10885) 2022-10-26 18:07:57 -07:00
table replace sprintf with its safe version snprintf (v2) (#11011) 2022-12-12 10:39:53 -08:00
test_util clang format files under test_util/ (#10855) 2022-10-24 20:32:25 -07:00
third-party Meta-internal folly integration with F14FastMap (#9546) 2022-04-13 07:34:01 -07:00
tools Revert PR 10777 "Fix FIFO causing overlapping seqnos in L0 files due to overla…" (#10999) 2022-11-29 10:56:42 -08:00
trace_replay fix compile warnings (#10976) 2022-11-22 15:51:01 -08:00
util Improve error messages for SST footer and size errors (#11009) 2022-12-09 10:03:47 -08:00
utilities Revise LockWAL/UnlockWAL implementation (#11020) 2022-12-13 21:45:00 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Git ignore .clangd/ (#10817) 2022-10-17 08:33:58 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Add a SecondaryCache::InsertSaved() API, use in CacheDumper impl (#10945) 2022-11-21 16:17:36 -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 Add Options::DisableExtraChecks, clarify force_consistency_checks (#9363) 2022-01-18 17:31:03 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Revise LockWAL/UnlockWAL implementation (#11020) 2022-12-13 21:45:00 -08:00
INSTALL.md Update supported VS versions in INSTALL.md (#9823) 2022-04-13 13:03:40 -07:00
LANGUAGE-BINDINGS.md Add grocksdb in Go language bindings (#10498) 2022-08-23 15:02:10 -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 broken dependency: update zlib from 1.2.12 to 1.2.13 (#10833) 2022-11-14 11:49:06 -08:00
PLUGINS.md Add pmem-rocksdb-plugin link in PLUGINs.md (#9934) 2022-05-12 22:02:28 -07:00
README.md Remove Travis CI (#10407) 2022-07-22 20:16:45 -07:00
ROCKSDB_LITE.md Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
TARGETS Add a SecondaryCache::InsertSaved() API, use in CacheDumper impl (#10945) 2022-11-21 16:17:36 -08:00
USERS.md Add Apache Spark as a user (#10993) 2022-11-28 09:42:42 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00
common.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
crash_test.mk Allow a custom DB cleanup command to be passed to db_crashtest.py (#10883) 2022-10-27 19:47:01 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
rocksdb.pc.in build: fix pkg-config file generation (#9953) 2022-05-30 12:46:40 -07:00
src.mk Add a SecondaryCache::InsertSaved() API, use in CacheDumper impl (#10945) 2022-11-21 16:17:36 -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

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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/main/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.

Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.

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.