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https://issues.apache.org/jira/browse/KAFKA-4685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834169#comment-15834169
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huxi commented on KAFKA-4685:
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Server logs showed that all the brokers have come back to register in ZK again.
See "Creating /brokers/ids/0,1,2" in the logs. So did you mean /controller and
/brokers/ids are still empty even after the broker 2 was elected as the new
controller?
> All partitions offline, no conroller znode in ZK
> ------------------------------------------------
>
> Key: KAFKA-4685
> URL: https://issues.apache.org/jira/browse/KAFKA-4685
> Project: Kafka
> Issue Type: Bug
> Reporter: Sinóros-Szabó Péter
> Attachments: kafka-0-logs.zip, kafka-1-logs.zip, kafka-2-logs.zip,
> zookeeper-logs.zip
>
>
> Setup: 3 Kafka 0.11.1.1 nodes on kubernetes (in AWS), and another 3 nodes of
> Zookeeper 3.5.2-alpha also in kubernetes (in AWS).
> At 2017-01-23 06:51 ZK sessions expired. It seems from the logs that kafka-2
> was elected as the new controller, but I am not sure how to read that logs.
> I've checked the ZK data and both the /controller is empty and also the
> /brokers/ids is empty. Kafka reports that all partitions are offline,
> although it seems to be working because messages are coming and going.
> We are using an alpha version, I know that it may be a problem, but I suppose
> that Kafka should see that there is not any node registered as controller.
> I have attached the Kafka and ZK logs
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