8ba17f382e
Summary: We already exercised backup functionality in `db_stress` according to the `-backup_one_in` flag. This PR verifies the backup can be restored/opened and sanity checks a few keys. Changes in this PR: - Extracted existing backup-related logic to a helper function, `TestBackupRestore` - Added restore logic, which targets a hidden directory named "./.restore\<thread number\>", similar to how backups target hidden directories named "./.backup\<thread number\>". - After restore, check the existence/non-existence of a few keys. - With this PR, backup is no longer compatible with clearing column families. - Also included unrelated fixes to set `ReadOptions::total_order_seek=true` when using `-compare_full_db_state_snapshot` Pull Request resolved: https://github.com/facebook/rocksdb/pull/4655 Differential Revision: D12972496 Pulled By: ajkr fbshipit-source-id: 481a40052d9a38d1bd5c5159aa4d7c5a4b546b80
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 specially 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.