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https://issues.apache.org/jira/browse/KAFKA-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14329587#comment-14329587
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Gwen Shapira commented on KAFKA-1971:
-------------------------------------
If you use an automated restart (say "service kafka restart"), the broker is
very likely to start again before the ZK timeout, I believe this used to put
the broker in an infinite loop of trying to register, but I don't remember the
exact details.
> 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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