[jira] [Created] (YARN-7721) TestContinuousScheduling fails sporadically with NPE

["Jason Lowe (JIRA)" <ji...@apache.org>]

Jason Lowe created YARN-7721:
--------------------------------

             Summary: TestContinuousScheduling fails sporadically with NPE
                 Key: YARN-7721
                 URL: https://issues.apache.org/jira/browse/YARN-7721
             Project: Hadoop YARN
          Issue Type: Bug
          Components: fairscheduler
    Affects Versions: 3.1.0
            Reporter: Jason Lowe


TestContinuousScheduling#testFairSchedulerContinuousSchedulingInitTime is failing sporadically with an NPE in precommit builds, and I can usually reproduce it locally after a few tries:
{noformat}
[ERROR] testFairSchedulerContinuousSchedulingInitTime(org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestContinuousScheduling)  Time elapsed: 0.085 s  <<< ERROR!
java.lang.NullPointerException
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestContinuousScheduling.testFairSchedulerContinuousSchedulingInitTime(TestContinuousScheduling.java:383)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
[...]
{noformat}




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