c6abe30ee3
Summary: We were removing the file from `log_recycle_files_` before renaming it with `ReuseWritableFile()`. Since `ReuseWritableFile()` occurs outside the DB mutex, it was possible for a concurrent full purge to sneak in and delete the file before it could be renamed. Consequently, `SwitchMemtable()` would fail and the DB would enter read-only mode. The fix is to hold the old file number in `log_recycle_files_` until after the file has been renamed. Full purge uses that list to decide which files to keep, so it can no longer delete a file pending recycling. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5900 Test Plan: new unit test Differential Revision: D19771719 Pulled By: ajkr fbshipit-source-id: 094346349ca3fb499712e62de03905acc30b5ce8 |
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| file | ||
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| LANGUAGE-BINDINGS.md | ||
| LICENSE.Apache | ||
| LICENSE.leveldb | ||
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| ROCKSDB_LITE.md | ||
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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/
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.