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https://issues.apache.org/jira/browse/FLINK-4167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15374689#comment-15374689
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ASF GitHub Bot commented on FLINK-4167:
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Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/2210
I've addressed your comments @zentol and introduced a `ProxyMetricGroup`
which simply forwards all calls as you've suggested.
> TaskMetricGroup does not close IOMetricGroup
> --------------------------------------------
>
> Key: FLINK-4167
> URL: https://issues.apache.org/jira/browse/FLINK-4167
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Affects Versions: 1.1.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Fix For: 1.1.0
>
>
> The {{TaskMetricGroup}} does not close the {{ioMetrics}} metric group. This
> causes that metrics registered under the {{ioMetrics}} are not deregistered
> after the termination of a job.
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