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https://issues.apache.org/jira/browse/KAFKA-18477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17932712#comment-17932712
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Jun Rao commented on KAFKA-18477:
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[~chia7712] : Good point. If the follower doesn't have the latest epoch,
currently we fall back to truncating based on HWM. So we can still keep that
part of the logic to support v0/v1 records. However, there is no need to ever
issue OffsetForLeaderEpochRequests.
> remove usage of OffsetForLeaderEpochRequest in AbstractFetcherThread
> --------------------------------------------------------------------
>
> Key: KAFKA-18477
> URL: https://issues.apache.org/jira/browse/KAFKA-18477
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 4.0.0
> Reporter: Jun Rao
> Assignee: 黃竣陽
> Priority: Major
> Fix For: 4.1.0
>
>
> This is because of the base MV in 4.0 is 3.0.
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