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https://issues.apache.org/jira/browse/FLINK-14898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16991103#comment-16991103
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Congxian Qiu(klion26) commented on FLINK-14898:
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[~azagrebin] have created FLINK-15136 for this
> Enable background cleanup of state with TTL by default
> ------------------------------------------------------
>
> Key: FLINK-14898
> URL: https://issues.apache.org/jira/browse/FLINK-14898
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Reporter: Andrey Zagrebin
> Assignee: Andrey Zagrebin
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> So far, we were conservative about enabling background cleanup strategies for
> state with TTL. In general, if state is configured to have TTL, most users
> would expect the background cleanup to kick in. As there were no reported
> issues so far since the release of backend specific cleanups and that should
> not affect any state without TTL, this issue suggests to enable default
> background cleanup for backends.
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