Steve Loughran created YARN-4330:
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Summary: 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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