Andrew Kryczka faba3fb53d protect valid backup files when max_valid_backups_to_open is set ... Summary: When `max_valid_backups_to_open` is set, the `BackupEngine` doesn't know about the files referenced by existing backups. This PR prevents us from deleting valid files when that option is set, in cases where we are unable to accurately determine refcount. There are warnings logged when we may miss deleting unreferenced files, and a recommendation in the header for users to periodically unset this option and run a full `GarbageCollect`. Closes https://github.com/facebook/rocksdb/pull/3518 Differential Revision: D7008331 Pulled By: ajkr fbshipit-source-id: 87907f964dc9716e229d08636a895d2fc7b72305		2018-04-05 21:13:21 -07:00
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backupable_db_test.cc	protect valid backup files when max_valid_backups_to_open is set	2018-04-05 21:13:21 -07:00
backupable_db.cc	protect valid backup files when max_valid_backups_to_open is set	2018-04-05 21:13:21 -07:00