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https://issues.apache.org/jira/browse/KAFKA-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14329154#comment-14329154
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Jun Rao commented on KAFKA-1971:
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This issue is that when broker 2's ZK registration fails, we try to shutdown
the broker. One of the steps is to explicitly delete the broker registration
path in ZK. Since broker 2 has the same broker id as broker 1, this actually
deletes broker 1's registration path by accident.
> 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
> Fix For: 0.8.3
>
>
> 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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