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https://issues.apache.org/jira/browse/KAFKA-5473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16465970#comment-16465970
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Ismael Juma commented on KAFKA-5473:
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[~glasser], I added a comment to KAFKA-4041 and reopened it. It is true that
KAFKA-5473 recreates the ZK client, but it only does so if the session expires.
And that doesn't handle all cases. As stated in KAFKA-4041, we will need
ZOOKEEPER-2184 for a complete fix.
> handle ZK session expiration properly when a new session can't be established
> -----------------------------------------------------------------------------
>
> Key: KAFKA-5473
> URL: https://issues.apache.org/jira/browse/KAFKA-5473
> Project: Kafka
> Issue Type: Sub-task
> Affects Versions: 0.9.0.0
> Reporter: Jun Rao
> Assignee: Prasanna Gautam
> Priority: Major
> Fix For: 1.1.0
>
>
> In https://issues.apache.org/jira/browse/KAFKA-2405, we change the logic in
> handling ZK session expiration a bit. If a new ZK session can't be
> established after session expiration, we just log an error and continue.
> However, this can leave the broker in a bad state since it's up, but not
> registered from the controller's perspective. Replicas on this broker may
> never to be in sync.
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