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https://issues.apache.org/jira/browse/KAFKA-19543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18009655#comment-18009655
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Matthias J. Sax commented on KAFKA-19543:
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Why is this a problem? Isn't it "by design" that the returned `Map` should
become "empty" when the consumer get's closed?
> The set of metrics returned from Consumer.metrics() changes after
> Consumer.close()
> ----------------------------------------------------------------------------------
>
> Key: KAFKA-19543
> URL: https://issues.apache.org/jira/browse/KAFKA-19543
> Project: Kafka
> Issue Type: Bug
> Components: clients, consumer, metrics
> Affects Versions: 4.1.0
> Reporter: Kirk True
> Assignee: Kirk True
> Priority: Minor
>
> metrics() reflects the current state, so if you get the metrics before you
> close and then look at them afterward, some of the metrics are missing
> because some were removed.
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