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https://issues.apache.org/jira/browse/FLINK-9938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16555336#comment-16555336
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Andrey Zagrebin commented on FLINK-9938:
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I think it could be also possible, though would need synchronisation if in
background.
This issue is just one of possible strategies for cleanup.
> State TTL cleanup during full state scan upon checkpointing
> -----------------------------------------------------------
>
> Key: FLINK-9938
> URL: https://issues.apache.org/jira/browse/FLINK-9938
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.6.0
> Reporter: Andrey Zagrebin
> Assignee: Andrey Zagrebin
> Priority: Major
> Fix For: 1.6.0
>
>
> We can try to piggyback full state scan during certain checkpoint processes
> in backends, check TTL expiration for every entry and evict expired to speed
> up cleanup.
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