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https://issues.apache.org/jira/browse/FLINK-18983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17180221#comment-17180221
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Matt Wang commented on FLINK-18983:
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You can add a test case in Description which has this problem.
> Job doesn't changed to failed if close function has blocked
> -----------------------------------------------------------
>
> Key: FLINK-18983
> URL: https://issues.apache.org/jira/browse/FLINK-18983
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Task
> Affects Versions: 1.11.0
> Reporter: YufeiLiu
> Priority: Major
>
> If a operator throw a exception, it will break process loop and dispose all
> operator. But state will never switch to FAILED if block in Function.close,
> and JobMaster can't know the final state and do restart.
> Task have {{TaskCancelerWatchDog}} to kill process if cancellation timeout,
> but it doesn't work for FAILED task.
> Can we just report final state and trigger clean up action by JM.
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