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https://issues.apache.org/jira/browse/YARN-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14990051#comment-14990051
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Steve Loughran commented on YARN-4330:
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As well as having a way to turn this feature off for miniclusters, the code
trying to instantiate the resource calculator should recognise the falure and
fallback, rather than retry. Retrying isn't going to fix this.
> 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
> Priority: Blocker
>
> 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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