a69bc91e37
Summary: Add a new field: BackupableDBOptions.max_background_copies. CreateNewBackup() and RestoreDBFromBackup() will use this number of threads to perform copies. If there is a backup rate limit, then max_background_copies must be 1. Update backupable_db_test.cc to test multi-threaded backup and restore. Update backupable_db_test.cc to test backups when the backup environment is not the same as the database environment. Test Plan: Run ./backupable_db_test Run valgrind ./backupable_db_test Run with TSAN and ASAN Reviewers: yhchiang, rven, anthony, sdong, igor Reviewed By: igor Subscribers: yhchiang, anthony, sdong, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D40725
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/