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https://issues.apache.org/jira/browse/YARN-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998326#comment-14998326
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Varun Saxena commented on YARN-4330:
------------------------------------
TestContainerManagerSecurity is failing even without this patch.
Checkstyle related(longer than 80 lines).
For findbugs, there is YARN-4298
> MiniYARNCluster prints multiple Failed to instantiate default resource
> calculator warning messages
> ---------------------------------------------------------------------------------------------------
>
> Key: YARN-4330
> URL: https://issues.apache.org/jira/browse/YARN-4330
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test, yarn
> Affects Versions: 2.8.0
> Environment: OSX, JUnit
> Reporter: Steve Loughran
> Assignee: Varun Saxena
> Priority: Blocker
> Attachments: YARN-4330.01.patch
>
>
> Whenever I try to start a MiniYARNCluster on Branch-2 (commit #0b61cca), I
> see multiple stack traces warning me that a resource calculator plugin could
> not be created
> {code}
> (ResourceCalculatorPlugin.java:getResourceCalculatorPlugin(184)) -
> java.lang.UnsupportedOperationException: Could not determine OS: Failed to
> instantiate default resource calculator.
> java.lang.UnsupportedOperationException: Could not determine OS
> {code}
> This is a minicluster. It doesn't need resource calculation. It certainly
> doesn't need test logs being cluttered with even more stack traces which will
> only generate false alarms about tests failing.
> There needs to be a way to turn this off, and the minicluster should have it
> that way by default.
> Being ruthless and marking as a blocker, because its a fairly major
> regression for anyone testing with the minicluster.
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