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b42cd6bed5
Summary: In the first implementation of BackupEngine, LATEST_BACKUP was the commit point. The backup became committed after the write to LATEST_BACKUP completed. However, we can avoid the need for LATEST_BACKUP. Instead of write to LATEST_BACKUP, the commit point can be the rename from `meta/<backup_id>.tmp` to `meta/<backup_id>`. Once we see that there exists a file `meta/<backup_id>` (without tmp), we can assume that backup is valid. In this diff, we still write out the file LATEST_BACKUP. We need to do this so that we can maintain backward compatibility. However, the new version doesn't depend on this file anymore. We get the latest backup by `ls`-ing `meta` directory. This diff depends on D41925 Test Plan: Adjusted backupable_db_test to this new behavior Reviewers: benj, yhchiang, sdong, AaronFeldman Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D42069 |
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| .. | ||
| backupable | ||
| checkpoint | ||
| compaction_filters | ||
| convenience | ||
| document | ||
| flashcache | ||
| geodb | ||
| leveldb_options | ||
| merge_operators | ||
| redis | ||
| spatialdb | ||
| table_properties_collectors | ||
| transactions | ||
| ttl | ||
| write_batch_with_index | ||
| merge_operators.h | ||