eeea27a048
Summary: Currently, manifest size is determined before getting min_log_num. But between getting manifest size and getting min_log_num, concurrently, a flush might succeed, which will write new records to manifest to make some WALs become outdated, then min_log_num will be correspondingly increased, but the new records in manifest will not be copied into the checkpoint because the manifest's size is determined before them, then the newly outdated WALs will still exist in the checkpoint's manifest, but they are not linked/copied to the checkpoint because their log number is < min_log_num, so a corruption of missing WAL will be reported when restoring from the checkpoint. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7836 Test Plan: make crash_test Reviewed By: ajkr Differential Revision: D25788204 Pulled By: cheng-chang fbshipit-source-id: a4e5acf30f08270b3c0a95304ff559a9e655252f
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.