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https://issues.apache.org/jira/browse/KAFKA-4295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15590599#comment-15590599
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huxi commented on KAFKA-4295:
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The design is not changed. 0.9.x still removes the zk nodes for inactive
console consumer groups which used a randomly-generated group id. But if the
consumer is stopped before the zk node 'offsets' got created, the program
failed to remove the path, which I prefer is a bug.
> kafka-console-consumer.sh does not delete the temporary group in zookeeper
> --------------------------------------------------------------------------
>
> Key: KAFKA-4295
> URL: https://issues.apache.org/jira/browse/KAFKA-4295
> Project: Kafka
> Issue Type: Bug
> Components: admin
> Affects Versions: 0.9.0.1, 0.10.0.0, 0.10.0.1
> Reporter: Sswater Shi
> Assignee: huxi
> Priority: Minor
>
> I'm not sure it is a bug or you guys designed it.
> Since 0.9.x.x, the kafka-console-consumer.sh will not delete the group
> information in zookeeper/consumers on exit when without "--new-consumer".
> There will be a lot of abandoned zookeeper/consumers/console-consumer-xxx if
> kafka-console-consumer.sh runs a lot of times.
> When 0.8.x.x, the kafka-console-consumer.sh can be followed by an argument
> "group". If not specified, the kafka-console-consumer.sh will create a
> temporary group name like 'console-consumer-xxxx'. If the group name is
> specified by "group", the information in the zookeeper/consumers will be kept
> on exit. If the group name is a temporary one, the information in the
> zookeeper will be deleted when kafka-console-consumer.sh is quitted by
> Ctrl+C. Why this is changed from 0.9.x.x.
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