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https://issues.apache.org/jira/browse/KAFKA-1154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836142#comment-13836142
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Jun Rao commented on KAFKA-1154:
--------------------------------
Created reviewboard https://reviews.apache.org/r/15938/
against branch origin/trunk
> replicas may not have consistent data after becoming follower
> -------------------------------------------------------------
>
> Key: KAFKA-1154
> URL: https://issues.apache.org/jira/browse/KAFKA-1154
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.8.1
> Reporter: Jun Rao
> Assignee: Jun Rao
> Fix For: 0.8.1
>
> Attachments: KAFKA-1154.patch
>
>
> This is an issued introduced in KAFKA-1001. The issue is that in
> ReplicaManager.makeFollowers(), we truncate the log before marking the
> replica as the follower. New messages from the producer can still be added to
> the log after the log is truncated, but before the replica is marked as the
> follower. Those newly produced messages can actually be committed, which
> implies those truncated messages are also committed. However, the new leader
> is not guaranteed to have those truncated messages.
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