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https://issues.apache.org/jira/browse/YARN-5107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15290908#comment-15290908
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Akira AJISAKA commented on YARN-5107:
-------------------------------------

bq. What I want to know is how this test has been failing consistently for 16 
months without anyone noticing...
I guess the test was broken by upgrading the version of java compiler. 
(HADOOP-11858) The test passed at May 16 01:54, but the test failed at May 16 
23:05.
https://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/201605.mbox/%3C1735640484.5717.1463363683007.JavaMail.jenkins@crius%3E
https://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/201605.mbox/%3C298927843.6177.1463439935479.JavaMail.jenkins@crius%3E


> TestContainerMetrics fails
> --------------------------
>
>                 Key: YARN-5107
>                 URL: https://issues.apache.org/jira/browse/YARN-5107
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: test
>            Reporter: Akira AJISAKA
>            Assignee: Akira AJISAKA
>             Fix For: 3.0.0-alpha1
>
>         Attachments: YARN-5107.01.patch
>
>
> {noformat}
> testContainerMetricsFlow(org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.TestContainerMetrics)
>   Time elapsed: 0.022 sec  <<< ERROR!
> org.mockito.exceptions.misusing.WrongTypeOfReturnValue: 
> TestContainerMetrics cannot be returned by register()
> register() should return MetricsSink
>       at 
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.TestContainerMetrics.testContainerMetricsFlow(TestContainerMetrics.java:53)
> testContainerMetricsLimit(org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.TestContainerMetrics)
>   Time elapsed: 0.001 sec  <<< ERROR!
> org.mockito.exceptions.misusing.WrongTypeOfReturnValue: 
> TestContainerMetrics cannot be returned by register()
> register() should return MetricsSink
>       at 
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.TestContainerMetrics.testContainerMetricsLimit(TestContainerMetrics.java:93)
> {noformat}



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