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https://issues.apache.org/jira/browse/KAFKA-763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584482#comment-13584482
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Neha Narkhede commented on KAFKA-763:
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Yes, al though I'm questioning the need to cover these complex cases since if
we don't do it correctly there is a much bigger impact and the performance gain
will not be worth it.
> Add an option to replica from the largest offset during unclean leader
> election
> -------------------------------------------------------------------------------
>
> Key: KAFKA-763
> URL: https://issues.apache.org/jira/browse/KAFKA-763
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 0.8
> Reporter: Jun Rao
> Assignee: Jun Rao
> Priority: Blocker
> Labels: p2
> Attachments: kafka-763_v1.patch
>
>
> If there is an unclean leader election, a follower may have an offset out of
> the range of the leader. Currently, the follower will delete all its data and
> refetch from the smallest offset of the leader. It would be useful to add an
> option to let the follower refetch from the largest offset of the leader
> since refetching from the smallest offset may take some time.
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