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https://issues.apache.org/jira/browse/KAFKA-15687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yu Wang reassigned KAFKA-15687:
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Assignee: Yu Wang
> Update host address for the GoupMetadata when replace static members
> --------------------------------------------------------------------
>
> Key: KAFKA-15687
> URL: https://issues.apache.org/jira/browse/KAFKA-15687
> Project: Kafka
> Issue Type: Improvement
> Components: group-coordinator
> Affects Versions: 3.6.0
> Reporter: Yu Wang
> Assignee: Yu Wang
> Priority: Major
>
> We are trying to use static membership protocol for our consumers in
> Kubernetes. When our pod was recreated, we found that the host address in the
> group description will not change to the address of the new created pod.
> For example we have one pod with *group.instance.id = id1 and ip =
> 192.168.0.1* when the pod crashes, we will replace it with a new pod with
> same *group.instance.id = id1* but a different {*}ip = 192.168.0.2{*}. After
> the new pod joined in the consumer group, with the command "describe group",
> we found the host is still {*}192.168.0.1{*}. This makes us cannot find
> correct consumer instance when check the issue.
> After read the source code, we found that the groupCoordinator will not
> change the host address for the same {*}groupInstanceId{*}.
> [https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/coordinator/group/GroupMetadata.scala#L316]
> Is it also possible to replace the host address when replace the static
> member?
>
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