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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-2857) ConsumerGroupCommand throws GroupCoordinatorNotAvailableException when describing a non-existent group before the offset topic is created
Date Fri, 03 Mar 2017 23:47:45 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-2857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15895265#comment-15895265
] 

ASF GitHub Bot commented on KAFKA-2857:
---------------------------------------

GitHub user vahidhashemian opened a pull request:

    https://github.com/apache/kafka/pull/2636

    MINOR: Follow up to KAFKA-2857

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/vahidhashemian/kafka minor/kafka-2857-followup

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/2636.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2636
    
----

----


> ConsumerGroupCommand throws GroupCoordinatorNotAvailableException when describing a non-existent
group before the offset topic is created
> -----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-2857
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2857
>             Project: Kafka
>          Issue Type: Bug
>          Components: tools
>            Reporter: Ismael Juma
>            Assignee: Vahid Hashemian
>            Priority: Minor
>             Fix For: 0.11.0.0
>
>
> If we describe a non-existing group before the offset topic is created, like the following:
> {code}
> bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --new-consumer --describe
--group gggg
> {code}
> We get the following error:
> {code}
> Error while executing consumer group command The group coordinator is not available.
> org.apache.kafka.common.errors.GroupCoordinatorNotAvailableException: The group coordinator
is not available.
> {code}
> The exception is thrown in the `adminClient.describeConsumerGroup` call. We can't interpret
this exception as meaning that the group doesn't exist because it could also be thrown f all
replicas for a offset topic partition are down (as explained by Jun).
> Jun also suggested that we should distinguish if a coordinator is not available from
the case where a coordinator doesn't exist.



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