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https://issues.apache.org/jira/browse/KAFKA-2017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14551540#comment-14551540
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Guozhang Wang commented on KAFKA-2017:
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Created reviewboard https://reviews.apache.org/r/34450/diff/
against branch origin/trunk
> 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
> Reporter: Onur Karaman
> Assignee: Onur Karaman
> Attachments: KAFKA-2017.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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