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https://issues.apache.org/jira/browse/KAFKA-13193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin McCabe resolved KAFKA-13193.
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Resolution: Fixed
> Replica manager doesn't update partition state when transitioning from leader
> to follower with unknown leader
> -------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13193
> URL: https://issues.apache.org/jira/browse/KAFKA-13193
> Project: Kafka
> Issue Type: Bug
> Components: kraft, replication
> Reporter: Jose Armando Garcia Sancio
> Assignee: Jose Armando Garcia Sancio
> Priority: Major
> Labels: kip-500
>
> This issue applies to both the ZK and KRaft implementation of the replica
> manager. In the rare case when a replica transition from leader to follower
> with no leader the partition state is not updated.
> This is because when handling makeFollowers the ReplicaManager only updates
> the partition state if the leader is alive. The solution is to always
> transition to follower but not start the fetcher thread if the leader is
> unknown or not alive.
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