[jira] [Commented] (YARN-4169) jenkins trunk+java build failed in TestNodeStatusUpdaterForLabels

["Steve Loughran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-4169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14747332#comment-14747332 ] 

Steve Loughran commented on YARN-4169:
--------------------------------------

This may be a transient race condition, but it is caused by {{resourceTracker.labels}} being null.

{code}
    assertNLCollectionEquals(resourceTracker.labels,
        dummyLabelsProviderRef
            .getNodeLabels());
{code}

Even if this isn't replicable
# the assert is getting the equals test wrong: expected comes first
# the {{assertNLCollectionEquals}} check needs some {{assertNotNull()}} checks with meaningful errors on its arguments

> jenkins trunk+java build failed in TestNodeStatusUpdaterForLabels
> -----------------------------------------------------------------
>
>                 Key: YARN-4169
>                 URL: https://issues.apache.org/jira/browse/YARN-4169
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 3.0.0
>         Environment: Jenkins
>            Reporter: Steve Loughran
>            Priority: Critical
>
> Test failing in [[Jenkins build 402|https://builds.apache.org/view/H-L/view/Hadoop/job/Hadoop-Yarn-trunk-Java8/402/testReport/junit/org.apache.hadoop.yarn.server.nodemanager/TestNodeStatusUpdaterForLabels/testNodeStatusUpdaterForNodeLabels/]
> {code}
> java.lang.NullPointerException: null
> 	at java.util.HashSet.<init>(HashSet.java:118)
> 	at org.apache.hadoop.yarn.nodelabels.NodeLabelTestBase.assertNLCollectionEquals(NodeLabelTestBase.java:103)
> 	at org.apache.hadoop.yarn.server.nodemanager.TestNodeStatusUpdaterForLabels.testNodeStatusUpdaterForNodeLabels(TestNodeStatusUpdaterForLabels.java:268)
> {code}



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