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https://issues.apache.org/jira/browse/KAFKA-3556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Liquan Pei reassigned KAFKA-3556:
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Assignee: Liquan Pei
> Improve group coordinator metrics
> ---------------------------------
>
> Key: KAFKA-3556
> URL: https://issues.apache.org/jira/browse/KAFKA-3556
> Project: Kafka
> Issue Type: Improvement
> Reporter: Jason Gustafson
> Assignee: Liquan Pei
>
> We currently don't have many metrics to track the behavior of the group
> coordinator (especially with respect to the new consumer). On a quick pass, I
> only saw a couple gauges in GroupMetadataManager for the number of groups and
> the number of cached offsets. Here are some interesting metrics that may be
> worth tracking:
> 1. Session timeout rate
> 2. Rebalance latency/rate
> 3. Commit latency/rate
> 4. Average group size
> 5. Size of metadata cache
> Some of these may also be interesting to track per group.
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