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https://issues.apache.org/jira/browse/KAFKA-479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439174#comment-13439174
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Neha Narkhede commented on KAFKA-479:
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Seems like an issue with either the zookeeper client or Java NIO. The zookeeper
bugs above are filed for the same issue on the zookeeper server. What version
of the zookeeper client are you using ?
> ZK EPoll taking 100% CPU usage with Kafka Client
> ------------------------------------------------
>
> Key: KAFKA-479
> URL: https://issues.apache.org/jira/browse/KAFKA-479
> Project: Kafka
> Issue Type: Bug
> Environment: java 1.6.0_21
> Kafka 0.7.14
> Reporter: Chris Riccomini
> Priority: Blocker
> Attachments: java.hprof.txt, java.hprof.txt
>
>
> Hey Guys,
> I'm seeing a very strange bug after I upgraded to Kafka 0.7.14. On my
> consumer side, the process seems to run with very high CPU usage. I turned on
> HPROF, and it's showing that 75% of the CPU usage is going to Java's NIO
> EPoll/select calls.
> There are supposedly work arounds that Mina and a few others employ. This
> seems like more of a ZK bug- have you guys seen this before?
> Any ideas?
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