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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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)