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https://issues.apache.org/jira/browse/FLINK-9026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16407601#comment-16407601
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Till Rohrmann commented on FLINK-9026:
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I think it is often better to close/unregister resources in the scope where
they have been opened/registered. This makes resource management much easier.
But then we should at least close the {{TaskManagerMetricGroup}} when the
{{TaskExecutor}} is shut down.
> Unregister finished tasks from TaskManagerMetricGroup and close it
> ------------------------------------------------------------------
>
> Key: FLINK-9026
> URL: https://issues.apache.org/jira/browse/FLINK-9026
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Till Rohrmann
> Assignee: Sihua Zhou
> Priority: Major
> Labels: flip-6
> Fix For: 1.5.0
>
>
> We should unregister {{Tasks}} from the {{TaskManagerMetricGroup}} when they
> have reached a final state. Moreover, we should close the
> {{TaskManagerMetricGroup}} either in the {{TaskExecutor#postStop}} method or
> let the caller do this.
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