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https://issues.apache.org/jira/browse/KAFKA-18477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17932386#comment-17932386
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Chia-Ping Tsai commented on KAFKA-18477:
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[~junrao] thanks for your explanation.
{quote}
If there is no leader epoch, we could just fall back to sending a FetchRequest
with -1 as LastFetchedEpoch to achieve the same behavior.
{quote}
Pardon me, do you mean the truncation logic using the high watermark can be
removed?
> 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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