smallx commented on pull request #3844:
URL: https://github.com/apache/iceberg/pull/3844#issuecomment-1023976437
Good idea, I add `truncate-snapshot-id` to `SnapshotSummary` to record
truncate-before snapshot.
**Case 1**: We will delete ANY files in snapshot B and D.
```
A -- B -truncate- C (empty snapshot, truncate-snapshot-id=B) -- D -truncate-
E (empty snapshot, truncate-snapshot-id=D)
```
**Case 2**: We will ignore truncate snapshot C.
```
A -- B -- D -- E (current snapshot)
|
`truncate- C (empty snapshot, truncate-snapshot-id=B)
```
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