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

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

Jun Rao created KAFKA-763:
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             Summary: 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


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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