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https://issues.apache.org/jira/browse/KAFKA-15911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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José Armando García Sancio updated KAFKA-15911:
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Affects Version/s: 3.7.0
> KRaft quorum leader should make sure the follower fetch is making progress
> --------------------------------------------------------------------------
>
> Key: KAFKA-15911
> URL: https://issues.apache.org/jira/browse/KAFKA-15911
> Project: Kafka
> Issue Type: Bug
> Components: kraft
> Affects Versions: 3.7.0
> Reporter: Luke Chen
> Priority: Major
>
> Just because the leader returned a successful response to FETCH and
> FETCH_SNAPSHOT doesn't mean that the followers were able to handle the
> response correctly.
> For example, imagine the case where the log end offset (LEO) is at 1000 and
> all of the followers are continuously fetching at offset 0 without ever
> increasing their fetch offset. This can happen if the followers encounter an
> error when processing the FETCH or FETCH_SNAPSHOT response.
> In this scenario the leader will never be able to increase the HWM. I think
> that this scenario is specific to KRaft and doesn't exists in Raft because
> KRaft is pull vs Raft which is push.
> https://github.com/apache/kafka/pull/14428#pullrequestreview-1751408695
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