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https://issues.apache.org/jira/browse/KAFKA-19882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bill Bejeck resolved KAFKA-19882.
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Resolution: Fixed
> JMX tags applied to all client metrics, not just client state for KIP-1091
> --------------------------------------------------------------------------
>
> Key: KAFKA-19882
> URL: https://issues.apache.org/jira/browse/KAFKA-19882
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 4.0.0
> Reporter: Bill Bejeck
> Assignee: Genseric Ghiro
> Priority: Major
> Fix For: 4.2.0, 4.0.2, 4.1.2
>
>
> When working on
> [KIP-1091|https://cwiki.apache.org/confluence/display/KAFKA/KIP-1091%3A+Improved+Kafka+Streams+operator+metrics],
> we mistakenly applied the `process-id` tag to all client-level metrics,
> rather than just the `client-state`, `thread-state`, and `recording-level`
> metrics as specified in the KIP. This issue came to light while working on
> KIP-1221, which aimed to add the `application-id` as a tag to the
> `client-state` metric introduced by KIP-1091.
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