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https://issues.apache.org/jira/browse/KAFKA-2437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14728351#comment-14728351
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ASF GitHub Bot commented on KAFKA-2437:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/189
> Controller does not handle zk node deletion correctly.
> ------------------------------------------------------
>
> Key: KAFKA-2437
> URL: https://issues.apache.org/jira/browse/KAFKA-2437
> Project: Kafka
> Issue Type: Bug
> Reporter: Jiangjie Qin
> Assignee: Jiangjie Qin
>
> We see this issue occasionally. The symptom is that when /controller path got
> deleted, the old controller does not resign so we end up having more than one
> controller in the cluster (although the requests from controller with old
> epoch will not be accepted). After checking zookeeper watcher by using wchp,
> it looks the zookeeper session who created the /controller path does not have
> a watcher on /controller. That causes the old controller not resigning.
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