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https://issues.apache.org/jira/browse/KAFKA-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14333482#comment-14333482
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Neha Narkhede commented on KAFKA-1971:
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Excellent, thanks for looking into this!
> starting a broker with a conflicting id will delete the previous broker
> registration
> ------------------------------------------------------------------------------------
>
> Key: KAFKA-1971
> URL: https://issues.apache.org/jira/browse/KAFKA-1971
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.2.0
> Reporter: Jun Rao
> Assignee: Jun Rao
> Priority: Blocker
> Fix For: 0.8.2.1
>
> Attachments: kafka-1971_2015-02-22_21:11:52.patch
>
>
> This issue can be easily reproduced by the following steps.
> 1. Start broker 1.
> 2. Start broker 2 with the same id as broker 1 (configure different port, log
> dir).
> Broker 2's registration will fail. However, broker 1's registration in ZK is
> now deleted.
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