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https://issues.apache.org/jira/browse/KAFKA-18956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17934350#comment-17934350
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Kevin Wu commented on KAFKA-18956:
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[~chia7712] I did not have any specific tests in mind. I thought it would be 
nice for the test infrastructure to be capable of KRaft controller failover and 
cluster partitioning so that test writers could test behavior under those 
scenarios. I see controller failover is possible from `KRaftClusterTest`, but I 
don't see any partitioning capabilities.

> Enable junit tests to optionally use more than one KRaft controller
> -------------------------------------------------------------------
>
>                 Key: KAFKA-18956
>                 URL: https://issues.apache.org/jira/browse/KAFKA-18956
>             Project: Kafka
>          Issue Type: Task
>            Reporter: Kevin Wu
>            Assignee: TengYao Chi
>            Priority: Major
>
> Currently, the junit tests create just one `controllerServer`. Enabling the 
> test framework to support multiple `controllerServers` would allow for junit 
> tests to test behavior during KRaft leadership changes.



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