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https://issues.apache.org/jira/browse/YARN-7458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16245021#comment-16245021
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Daniel Templeton commented on YARN-7458:
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That's a lot of info level logging! Do we need that message printed every 10ms?
> TestContainerManagerSecurity is still flakey
> --------------------------------------------
>
> Key: YARN-7458
> URL: https://issues.apache.org/jira/browse/YARN-7458
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test
> Affects Versions: 2.9.0, 3.0.0-beta1
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Attachments: YARN-7458.001.patch, YARN-7458.002.patch
>
>
> YARN-6150 made this less flakey, but we're still seeing an occasional issue
> here:
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.TestContainerManagerSecurity.waitForContainerToFinishOnNM(TestContainerManagerSecurity.java:420)
> at
> org.apache.hadoop.yarn.server.TestContainerManagerSecurity.testNMTokens(TestContainerManagerSecurity.java:356)
> at
> org.apache.hadoop.yarn.server.TestContainerManagerSecurity.testContainerManager(TestContainerManagerSecurity.java:167)
> {noformat}
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