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https://issues.apache.org/jira/browse/KAFKA-9977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352230#comment-17352230
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dc-heros commented on KAFKA-9977:
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hi [~ChrisEgerton], do you assign this issue to me ?
> Kafka Connect Task level error metrics exposed via JMX not removed on
> connector delete
> --------------------------------------------------------------------------------------
>
> Key: KAFKA-9977
> URL: https://issues.apache.org/jira/browse/KAFKA-9977
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 2.3.1
> Reporter: Tharindu
> Priority: Major
> Labels: metrics
>
> When collecting metrics at a task level exposed via JMX it was noticed that
> task level metrics reported under
> *_kafka.connect:type=task-error-metrics,connector="\{connector}",task="\{task}"_*
> were not being removed on connector deletion resulting in us collecting
> metrics for tasks no longer active.
> In the source code I could not find a point where these metrics were cleaned
> up.
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