[jira] [Updated] (KAFKA-20971) Add cross version system test for "streams" static group membership

["Harsh Vasava (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-20971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Harsh Vasava updated KAFKA-20971:
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    Attachment: image-2026-08-26-11-25-57-501.png

> Add cross version system test for "streams" static group membership
> -------------------------------------------------------------------
>
>                 Key: KAFKA-20971
>                 URL: https://issues.apache.org/jira/browse/KAFKA-20971
>             Project: Kafka
>          Issue Type: Test
>          Components: streams, system tests
>    Affects Versions: 4.4.0
>            Reporter: Matthias J. Sax
>            Assignee: Harsh Vasava
>            Priority: Minor
>         Attachments: image-2026-08-26-11-25-57-501.png
>
>
> We added support for static group membership on the "streams" protocol. This is a broker side fix, and thus Kafka Streams client 4.3 and 4.2 should also be able to use static membership against a 4.4+ broker. But we do not have a system test for this.
> We should also have a negative test, that a 4.4+ Kafka Streams client, agains an older broker 4.3/4.2 get a clear error message that static membership is not supported.



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