202605143b
Summary: crash tests donot run in DEBUG_MODE=0 on tmpfs when use_direct_reads/use_direct_io_for_flush_and_compaction is set randomly because direct I/O is not supported on tmpfs and tests exit. Fix: Sanitize direct I/O read options in DEBUG_LEVEL=0 so that crash tests can run in tmpfs. When mmap_reads is set, direct I/O reads options are unset so we can sanitize direct I/O reads options in case of tmpfs as well. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7643 Test Plan: 1. export DEBUG_LEVEL=0; export TEST_TMPDIR="/dev/shm"; export CRASH_TEST_EXT_ARGS="--use_direct_reads=1 --mmap_read=0"; make crash_test -j64 2. In DEBUG_LEVEL=1 mode: make crash_test -j64 Reviewed By: jay-zhuang Differential Revision: D24766550 Pulled By: akankshamahajan15 fbshipit-source-id: 021720b2343c12c72004f84b26147625d3991d9e |
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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.