Caizhi Weng created FLINK-27085:
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Summary: Introduce snapshot.num-retained.min option
Key: FLINK-27085
URL: https://issues.apache.org/jira/browse/FLINK-27085
Project: Flink
Issue Type: Sub-task
Components: Table Store
Affects Versions: 0.1.0
Reporter: Caizhi Weng
Fix For: 0.1.0
Currently we retain at least 1 snapshot when expiring. However consider the
following scenario:
A user writes a snapshot one day ago. Today he is reading this snapshot and
meanwhile writing more records. If a new snapshot is created and the reading is
not finished, the old snapshot created one day ago will be removed as it
exceeds maximum retaining time. This will cause the reading to fail.
We should introduce {{snapshot.num-retained.min}} to at least retain a minimum
number of snapshots to avoid this problem.
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