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https://issues.apache.org/jira/browse/FLINK-9421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16488085#comment-16488085
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Till Rohrmann commented on FLINK-9421:
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Sorry [~yanghua], I actually have a fix ready but did not see that you assigned
the issue to yourself. If it's ok, then I would take this issue.
> RunningJobsRegistry entries are not cleaned up after job termination
> --------------------------------------------------------------------
>
> Key: FLINK-9421
> URL: https://issues.apache.org/jira/browse/FLINK-9421
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Till Rohrmann
> Assignee: vinoyang
> Priority: Critical
>
> Currently, the {{Dispatcher}} does not clean up the {{RunningJobsRegistry}}
> after the job has finished. The consequence is that a ZNode with the JobID
> and a state num per job remains in ZooKeeper.
> We should clean up these ZNodes to avoid a resource leak.
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