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https://issues.apache.org/jira/browse/KAFKA-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14324724#comment-14324724
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Gwen Shapira commented on KAFKA-1961:
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[~jkreps] - by "accidentally" I mean, "I don't know what this topic is, so I
probably don't need it. Lets delete!".
I've seen this happen twice in the last few weeks. I wrote off the first
incident, but two is a trend :)
We have utility for cleaning offsets per consumer group or topic in the
consumer tool (or at least I think we have them? or planning to have them?). I
think deleting an entire topic is pretty extreme. Perhaps we can allow it with
a code-level flag (if someone calls the object directly) but hide the
capability in the CLI?
I think we do something similar in producing to internal topics.
> 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
> Labels: newbie
>
> 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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