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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, 02 Dec 2016 09:41:58 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-2857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15714623#comment-15714623
] 

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

GitHub user imandhan opened a pull request:

    https://github.com/apache/kafka/pull/2203

    KAFKA-2857 ConsumerGroupCommand throws GroupCoordinatorNotAvailableEx…

    …ception when describing a non-existent group before the offset topic is created #1548


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

    $ git pull https://github.com/imandhan/kafka KAFKA-2857-2

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

    https://github.com/apache/kafka/pull/2203.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 #2203
    
----
commit ea3a0609388d19caf2de6587a5efdbcb851a3224
Author: Ishita Mandhan <imandha@us.ibm.com>
Date:   2016-12-02T09:45:57Z

    KAFKA-2857 ConsumerGroupCommand throws GroupCoordinatorNotAvailableException when describing
a non-existent group before the offset topic is created #1548

----


> 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: Ishita Mandhan
>            Priority: Minor
>
> 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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