[jira] [Updated] (KAFKA-763) Add an option to replica from the largest offset during unclean leader election

["Jun Rao (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jun Rao updated KAFKA-763:
--------------------------

    Attachment: kafka-763_v1.patch

Attach a patch.
                
> 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
>         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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