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https://issues.apache.org/jira/browse/KAFKA-20971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18109357#comment-18109357
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Harsh Vasava commented on KAFKA-20971:
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Thanks, that makes sense. Should we still add a system test for the negative
case (4.4+ client against a 4.2/4.3 broker) to verify the expected error?
> 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
>
> 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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