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https://issues.apache.org/jira/browse/KAFKA-17506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Arthur resolved KAFKA-17506.
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Resolution: Fixed
> KRaftMigrationDriver initialization race condition
> --------------------------------------------------
>
> Key: KAFKA-17506
> URL: https://issues.apache.org/jira/browse/KAFKA-17506
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 3.8.0, 3.7.1, 3.9.0
> Reporter: David Arthur
> Assignee: David Arthur
> Priority: Blocker
> Fix For: 3.9.0, 3.7.2, 3.8.1
>
>
> There is a race condition between KRaftMigrationDriver running its first
> poll() and being notified by Raft about a leader change. If
> {{onControllerChange}} is called before RecoverMigrationStateFromZKEvent is
> run, we will end up getting stuck in the INACTIVE state.
> This is likely a very narrow race condition that is not likely to be seen in
> practice. It was found when debugging a flaky integration test.
> If encountered, this can be worked around by restarting the stuck controller.
> Leadership will move to another controller which will allow the migration to
> be started.
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