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https://issues.apache.org/jira/browse/KAFKA-14078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gustafson resolved KAFKA-14078.
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Resolution: Fixed
> Replica fetches to follower should return NOT_LEADER error
> ----------------------------------------------------------
>
> Key: KAFKA-14078
> URL: https://issues.apache.org/jira/browse/KAFKA-14078
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Priority: Major
> Fix For: 3.3.0
>
>
> After the fix for KAFKA-13837, if a follower receives a request from another
> replica, it will return UNKNOWN_LEADER_EPOCH even if the leader epoch
> matches. We need to do epoch leader/epoch validation first before we check
> whether we have a valid replica.
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