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https://issues.apache.org/jira/browse/YARN-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15606445#comment-15606445
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Eric Badger commented on YARN-4330:
-----------------------------------
I applied the most recent patch the branch-2.8 and ran
{{TestMRTimelineEventHandling}}, which uses the MiniYARNCluster (I'm running
MacOS Sierra). 2 of the 3 tests in the class consistently fail with the
stacktraces as shown below. I didn't dig into the tests any further, but I
imagine that this is reproducible on other machines.
{noformat}
Running org.apache.hadoop.mapred.TestMRTimelineEventHandling
Tests run: 3, Failures: 2, Errors: 0, Skipped: 0, Time elapsed: 93.809 sec <<<
FAILURE! - in org.apache.hadoop.mapred.TestMRTimelineEventHandling
testMRTimelineEventHandling(org.apache.hadoop.mapred.TestMRTimelineEventHandling)
Time elapsed: 35.821 sec <<< FAILURE!
java.lang.AssertionError: expected:<2> but was:<3>
at
org.apache.hadoop.mapred.TestMRTimelineEventHandling.testMRTimelineEventHandling(TestMRTimelineEventHandling.java:105)
testMapreduceJobTimelineServiceEnabled(org.apache.hadoop.mapred.TestMRTimelineEventHandling)
Time elapsed: 32.703 sec <<< FAILURE!
java.lang.AssertionError: expected:<2> but was:<3>
at
org.apache.hadoop.mapred.TestMRTimelineEventHandling.testMapreduceJobTimelineServiceEnabled(TestMRTimelineEventHandling.java:162)
{noformat}
> MiniYARNCluster is showing 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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