[jira] [Created] (KAFKA-3785) Fetcher spending unnecessary time during metrics recording

[Greg Fodor (JIRA)]

Greg Fodor created KAFKA-3785:
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             Summary: Fetcher spending unnecessary time during metrics recording
                 Key: KAFKA-3785
                 URL: https://issues.apache.org/jira/browse/KAFKA-3785
             Project: Kafka
          Issue Type: Improvement
            Reporter: Greg Fodor


Profiling a Kafka Streams job revealed some hotspots in the Fetcher during 
metrics flushing. Previous discussion here:

https://issues.apache.org/jira/browse/KAFKA-3769



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