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https://issues.apache.org/jira/browse/YARN-7458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244901#comment-16244901
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Daniel Templeton commented on YARN-7458:
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Couple more issues to fix while you're in there:
# Probably safer to call {{ContainerState.COMPLETE.equals(...)}} on L416-417
# That catch on L421 is bad. It means that if we interrupt this test, it will
ignore it and keep waiting. Probably better to put the catch outside the loop.
> 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-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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