[jira] [Created] (KAFKA-15192) Network thread receives exception when updating request metrics

["David Mao (Jira)" <ji...@apache.org>]

David Mao created KAFKA-15192:
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             Summary: Network thread receives exception when updating request metrics
                 Key: KAFKA-15192
                 URL: https://issues.apache.org/jira/browse/KAFKA-15192
             Project: Kafka
          Issue Type: Bug
          Components: metrics
            Reporter: David Mao


We noticed an exception being thrown from the network threads when updating some of the request histograms. Example stack trace:

 
java.util.NoSuchElementException
	at java.util.concurrent.ConcurrentSkipListMap.firstKey(ConcurrentSkipListMap.java:2064)
	at com.yammer.metrics.stats.ExponentiallyDecayingSample.update(ExponentiallyDecayingSample.java:102)
	at com.yammer.metrics.stats.ExponentiallyDecayingSample.update(ExponentiallyDecayingSample.java:81)
	at com.yammer.metrics.core.Histogram.update(Histogram.java:110)
 

Searching the error I found a similar ticket resolved in Cassandra by updating their dropwizard dependency to pull in [https://github.com/dropwizard/metrics/pull/1436]. https://issues.apache.org/jira/browse/CASSANDRA-15472

Kafka currently still uses yammer metrics, so we would need to take [https://cwiki.apache.org/confluence/display/KAFKA/KIP-510%3A+Metrics+library+upgrade] forward to upgrade to a dropwizard version that fixes this issue.



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