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https://issues.apache.org/jira/browse/KAFKA-7176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722610#comment-16722610
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Guozhang Wang commented on KAFKA-7176:
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I've looked into trunk again and I believe it's been fixed now with
[~vvcephei]'s fix. John, could you confirm? If yes please feel free to resolve
it with the fix versions.
> State store metrics for migrated tasks are not removed
> ------------------------------------------------------
>
> Key: KAFKA-7176
> URL: https://issues.apache.org/jira/browse/KAFKA-7176
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.1.0
> Reporter: Sam Lendle
> Priority: Major
>
> I observed that state store metrics for tasks that have been migrated to
> other instances are not removed and are still being updated with phantom
> values, (when viewed for example via jmx mbeans).
> For all tasks/threads on the same instance (including for migrated tasks),
> the values of state store metrics are all (nearly) the same. For the rate
> metrics at least, the value reported for each task is the rate I expect for
> all active tasks on that instance, so things are apparently being counted
> multiple times. Presumably, this is how migrated task metrics are being
> updated.
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