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https://issues.apache.org/jira/browse/FLINK-30833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mason Chen updated FLINK-30833:
-------------------------------
    Summary: TestMetricGroup supports being closed  (was: MetricListener 
supports closing metric groups)

> TestMetricGroup supports being closed
> -------------------------------------
>
>                 Key: FLINK-30833
>                 URL: https://issues.apache.org/jira/browse/FLINK-30833
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Metrics, Tests
>    Affects Versions: 1.16.1
>            Reporter: Mason Chen
>            Priority: Major
>
> The internal TestingMetricRegistry does not register an action when a metric 
> group is closed. This would allow the use of the MetricListener to test logic 
> that closes metric groups.
> [https://github.com/apache/flink/blob/44dbb8ec84792540095b826616d0f21b745aa995/flink-test-utils-parent/flink-test-utils/src/main/java/org/apache/flink/metrics/testutils/MetricListener.java#L53]
> This change doesn't require exposing any public API and is transparent.



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