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https://issues.apache.org/jira/browse/KAFKA-4083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16226284#comment-16226284
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Simon Wan Wenli commented on KAFKA-4083:
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Is this patch still necessary? If so, I can resolve its conflicts.
> ReassignPartitionsCommand does not check replication factor
> -----------------------------------------------------------
>
> Key: KAFKA-4083
> URL: https://issues.apache.org/jira/browse/KAFKA-4083
> Project: Kafka
> Issue Type: Bug
> Components: admin, core
> Affects Versions: 0.8.2.0, 0.9.0.0, 0.10.0.0
> Environment: Linux 14.04 LTS, Scala 2.10
> Reporter: Simon Wan Wenli
> Assignee: Simon Wan Wenli
> Priority: Minor
> Labels: newbie
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> ReassignPartitionsCommand does not check whether the replication factor of a
> partition is the same as existing replication factor, which may result that
> different partitions of a topic have different number of replicas. More
> specifically, TopicCommand will throw exception which contains "All
> partitions should have the same number of replicas." as the message when the
> user tries to add partitions. I think this loophole also may leave Kafka in a
> situation from which it is difficult to recover.
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