[ 
https://issues.apache.org/jira/browse/KAFKA-5889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16394280#comment-16394280
 ] 

Ted Yu commented on KAFKA-5889:
-------------------------------

>From 
>https://builds.apache.org/job/kafka-trunk-jdk9/462/testReport/kafka.api/MetricsTest/testMetrics/
> :
{code}
java.lang.AssertionError: Broker metric not recorded correctly for 
kafka.network:type=RequestMetrics,name=MessageConversionsTimeMs,request=Produce 
value 0.0
        at org.junit.Assert.fail(Assert.java:88)
        at org.junit.Assert.assertTrue(Assert.java:41)
        at 
kafka.api.MetricsTest.verifyYammerMetricRecorded(MetricsTest.scala:289)
        at 
kafka.api.MetricsTest.verifyBrokerMessageConversionMetrics(MetricsTest.scala:198)
        at kafka.api.MetricsTest.testMetrics(MetricsTest.scala:93)
{code}

> MetricsTest is flaky
> --------------------
>
>                 Key: KAFKA-5889
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5889
>             Project: Kafka
>          Issue Type: Test
>            Reporter: Ted Yu
>            Priority: Major
>
> The following appeared in several recent builds (e.g. 
> https://builds.apache.org/job/kafka-trunk-jdk7/2758) :
> {code}
> kafka.metrics.MetricsTest > testMetricsLeak FAILED
>     java.lang.AssertionError: expected:<1216> but was:<1219>
>         at org.junit.Assert.fail(Assert.java:88)
>         at org.junit.Assert.failNotEquals(Assert.java:834)
>         at org.junit.Assert.assertEquals(Assert.java:645)
>         at org.junit.Assert.assertEquals(Assert.java:631)
>         at 
> kafka.metrics.MetricsTest$$anonfun$testMetricsLeak$1.apply$mcVI$sp(MetricsTest.scala:68)
>         at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:160)
>         at kafka.metrics.MetricsTest.testMetricsLeak(MetricsTest.scala:66)
> {code}



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