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Co-authored-by: Grace Cai <[email protected]>
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2 people authored and ti-chi-bot committed Mar 4, 2025
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Expand Up @@ -122,7 +122,7 @@ Log backup generates the following types of files:

Explanation of the backup file directory structure:

- `backupmeta`: contains backup metadata. The `resolved_ts` in the filename indicates the backup progress, meaning that data before this TSO has been fully backed up. However, note that this TSO only reflects the progress of certain shards.
- `backupmeta`: stores backup metadata. The `resolved_ts` in the filename indicates the backup progress, meaning that data before this TSO has been fully backed up. However, note that this TSO only reflects the progress of certain shards.
- `global_checkpoint`: represents the global backup progress. It records the latest point in time to which data can be restored using `br restore point`.
- `{date}/{hour}`: stores backup data for the corresponding date and hour. When cleaning up storage, always use `br log truncate` instead of manually deleting data. This is because the metadata references the data in this directory, and manual deletion might lead to restore failures or data inconsistencies after restore.

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