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https://issues.apache.org/jira/browse/KAFKA-3829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15517622#comment-15517622
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Jason Gustafson commented on KAFKA-3829:
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[~liquanpei] Going to go ahead and pick this up since the code freeze is just a
week out. Let me know if you have time and would rather finish it yourself.
> Warn that kafka-connect group.id must not conflict with connector names
> -----------------------------------------------------------------------
>
> Key: KAFKA-3829
> URL: https://issues.apache.org/jira/browse/KAFKA-3829
> Project: Kafka
> Issue Type: Improvement
> Components: KafkaConnect
> Affects Versions: 0.9.0.1
> Reporter: Barry Kaplan
> Assignee: Liquan Pei
> Priority: Critical
> Labels: documentation
> Fix For: 0.10.1.0
>
>
> If the group.id value happens to have the same value as a connector names the
> following error will be issued:
> {quote}
> Attempt to join group connect-elasticsearch-indexer failed due to: The group
> member's supported protocols are incompatible with those of existing members.
> {quote}
> Maybe the documentation for Distributed Worker Configuration group.id could
> be worded:
> {quote}
> A unique string that identifies the Connect cluster group this worker belongs
> to. This value must be different than all connector configuration 'name'
> properties.
> {quote}
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