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https://issues.apache.org/jira/browse/KAFKA-550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13473346#comment-13473346
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Jun Rao commented on KAFKA-550:
-------------------------------
Could you open a separate jira for improving partition assignment for wildcard
topic? This is probably beyond 0.8 though.
> Wildcarded consumption is single-threaded
> -----------------------------------------
>
> Key: KAFKA-550
> URL: https://issues.apache.org/jira/browse/KAFKA-550
> Project: Kafka
> Issue Type: Bug
> Reporter: Joel Koshy
> Assignee: Joel Koshy
> Attachments: KAFKA-550-v1.patch, KAFKA-550-v2.patch
>
>
> It's surprising that we haven't noticed this before, but I was looking at a
> CPU usage profile on yourkit and It turns out that only one mirror maker
> thread is actually doing anything. Basically I suspect some bug in fetcher ->
> queue mapping. Only one queue seems to have any data. I'll look into this
> probably next week.
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