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https://issues.apache.org/jira/browse/KAFKA-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14324505#comment-14324505
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Neha Narkhede commented on KAFKA-1961:
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That's a good catch [~gwenshap]. Seems like a bug.
> Looks like its possible to delete _consumer_offsets topic
> ---------------------------------------------------------
>
> Key: KAFKA-1961
> URL: https://issues.apache.org/jira/browse/KAFKA-1961
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.2.0
> Reporter: Gwen Shapira
>
> Noticed that kafka-topics.sh --delete can successfully delete internal topics
> (__consumer_offsets).
> I'm pretty sure we want to prevent that, to avoid users shooting themselves
> in the foot.
> Topic admin command should check for internal topics, just like
> ReplicaManager does and not let users delete them.
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