bb95ed284d
Summary: In a distributed file system, directory ownership is enforced by fencing off the previous owner once they've been preempted by a new owner. This PR adds a IOStatus subcode for ```StatusCode::IOError``` to indicate this. Once this error is returned for a file write, the DB is put in read-only mode and not allowed to resume in read-write mode. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7374 Test Plan: Add new unit tests in ```error_handler_fs_test``` Reviewed By: riversand963 Differential Revision: D23687777 Pulled By: anand1976 fbshipit-source-id: bef948642089dc0af399057864d9a8ca339e8b2f
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.