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https://issues.apache.org/jira/browse/KAFKA-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15463861#comment-15463861
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Greg Fodor commented on KAFKA-3769:
-----------------------------------
I've done some additional profiling and I have found that this problem also
seems to crop up in complex kafka streams jobs within the Kafka core Selector
class. Should I open another JIRA?
> KStream job spending 60% of time writing metrics
> ------------------------------------------------
>
> Key: KAFKA-3769
> URL: https://issues.apache.org/jira/browse/KAFKA-3769
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.0.0
> Reporter: Greg Fodor
> Assignee: Guozhang Wang
> Priority: Critical
> Fix For: 0.10.1.0
>
>
> I've been profiling a complex streams job, and found two major hotspots when
> writing metrics, which take up about 60% of the CPU time of the job. (!) A PR
> is attached.
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