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Posted to dev@kafka.apache.org by "Chris Riccomini (JIRA)" <ji...@apache.org> on 2012/08/22 01:44:38 UTC
[jira] [Updated] (KAFKA-479) ZK EPoll taking 100% CPU usage with
Kafka Client
[ https://issues.apache.org/jira/browse/KAFKA-479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris Riccomini updated KAFKA-479:
----------------------------------
Attachment: java.hprof.txt
Attaching hprof dump for consumer process.
> 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
>
>
> 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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