Steve Loughran created YARN-4330:

             Summary: MiniYARNCluster prints multiple  Failed to instantiate 
default resource calculator warning messages
                 Key: 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 

( - 
java.lang.UnsupportedOperationException: Could not determine OS: Failed to 
instantiate default resource calculator.
java.lang.UnsupportedOperationException: Could not determine OS

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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