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https://issues.apache.org/jira/browse/YARN-4623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110678#comment-15110678
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Jason Lowe commented on YARN-4623:
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Test failure appears to have been introduced by YARN-4452. [~Naganarasimha] or
[~djp] could you take a look?
> TestSystemMetricsPublisher#testPublishAppAttemptMetricsForUnmanagedAM fails
> with NPE
> ------------------------------------------------------------------------------------
>
> Key: YARN-4623
> URL: https://issues.apache.org/jira/browse/YARN-4623
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Affects Versions: 2.7.3
> Reporter: Jason Lowe
>
> testPublishAppAttemptMetricsForUnmanagedAM is failing with a
> NullPointerException on branch-2.7.
> {noformat}
> Running
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TestSystemMetricsPublisher
> Tests run: 4, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 6.393 sec <<<
> FAILURE! - in
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TestSystemMetricsPublisher
> testPublishAppAttemptMetricsForUnmanagedAM(org.apache.hadoop.yarn.server.resourcemanager.metrics.TestSystemMetricsPublisher)
> Time elapsed: 0.026 sec <<< ERROR!
> java.lang.NullPointerException: null
> at
> org.apache.hadoop.yarn.server.resourcemanager.metrics.SystemMetricsPublisher.appAttemptFinished(SystemMetricsPublisher.java:163)
> at
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TestSystemMetricsPublisher.testPublishAppAttemptMetricsForUnmanagedAM(TestSystemMetricsPublisher.java:204)
> {noformat}
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