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https://issues.apache.org/jira/browse/KAFKA-209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153987#comment-13153987
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Jun Rao commented on KAFKA-209:
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It should behave that way in both 0.6 and 0.7. If not, it's a bug.
> Remove empty directory when no log segments remain
> --------------------------------------------------
>
> Key: KAFKA-209
> URL: https://issues.apache.org/jira/browse/KAFKA-209
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Reporter: Taylor Gautier
>
> When the log cleaner runs it deletes segments from the log directory.
> However, if all the segments are cleaned, the log directory itself is
> retained. There doesn't seem to be any need for this as the directory will
> be re-created on write if necessary.
> This JIRA would improve the log cleaner to also remove unused topic
> directories from the log directory.
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