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Jun Rao commented on KAFKA-550: ------------------------------- Thanks for the patch. What was the bug? Is it the implicit function? 1.reinitializeConsumer(): It seems that the computation for threadQueueStreamPairs is slightly different for WildcardTopicCount and StaticTopicCount. However, it seems that we can just use the same computation. > 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 > > > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira