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https://issues.apache.org/jira/browse/KAFKA-479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439170#comment-13439170
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Chris Riccomini commented on KAFKA-479:
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Interesting reading:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6403933
http://www.java.net/node/679300
https://github.com/netty/netty/issues/327
https://issues.apache.org/jira/browse/ZOOKEEPER-287
https://issues.apache.org/jira/browse/ZOOKEEPER-427
> 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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