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https://issues.apache.org/jira/browse/KAFKA-2017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986850#comment-14986850
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ASF GitHub Bot commented on KAFKA-2017:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/386
> Persist Coordinator State for Coordinator Failover
> --------------------------------------------------
>
> Key: KAFKA-2017
> URL: https://issues.apache.org/jira/browse/KAFKA-2017
> Project: Kafka
> Issue Type: Sub-task
> Components: consumer
> Affects Versions: 0.9.0.0
> Reporter: Onur Karaman
> Assignee: Guozhang Wang
> Priority: Blocker
> Fix For: 0.9.0.0
>
> Attachments: KAFKA-2017.patch, KAFKA-2017_2015-05-20_09:13:39.patch,
> KAFKA-2017_2015-05-21_19:02:47.patch
>
>
> When a coordinator fails, the group membership protocol tries to failover to
> a new coordinator without forcing all the consumers rejoin their groups. This
> is possible if the coordinator persists its state so that the state can be
> transferred during coordinator failover. This state consists of most of the
> information in GroupRegistry and ConsumerRegistry.
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