[jira] [Comment Edited] (KAFKA-1407) Broker can not return to ISR because of BadVersionException

["Jun Rao (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-1407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13975605#comment-13975605 ] 

Jun Rao edited comment on KAFKA-1407 at 4/21/14 2:55 PM:
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When this happens, do you see any connection loss to ZK? If so, this may be the same as KAFKA-1382.


was (Author: junrao):
When this happens, do you see any connection loss to ZK?

> Broker can not return to ISR because of BadVersionException
> -----------------------------------------------------------
>
>                 Key: KAFKA-1407
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1407
>             Project: Kafka
>          Issue Type: Bug
>          Components: controller
>    Affects Versions: 0.8.1
>            Reporter: Dmitry Bugaychenko
>            Assignee: Neha Narkhede
>
> Each morning we found a broker out of ISR at stuck with log full of messages:
> {code}
> INFO   | jvm 1    | 2014/04/21 08:36:21 | [2014-04-21 09:36:21,907] ERROR Conditional update of path /brokers/topics/topic2/partitions/1/state with data {"controller_epoch":46,"leader":2,"version":1,"leader_epoch":38,"isr":[2]} and expected version 53 failed due to org.apache.zookeeper.KeeperException$BadVersionException: KeeperErrorCode = BadVersion for /brokers/topics/topic2/partitions/1/state (kafka.utils.ZkUtils$)
> INFO   | jvm 1    | 2014/04/21 08:36:21 | [2014-04-21 09:36:21,907] INFO Partition [topic2,1] on broker 2: Cached zkVersion [53] not equal to that in zookeeper, skip updating ISR (kafka.cluster.Partition)
> {code}
> It seems that it can not recover after short netwrok break down and the only way to return it is restart it using kill -9.



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