TestMRJobs.testJobClassloader fails intermittent

ERROR] testJobClassloader(org.apache.hadoop.mapreduce.v2.TestMRJobs)  Time elapsed: 29.77 s  <<< FAILURE!
java.lang.AssertionError: 
Job status: Application application_1567255842834_0009 failed 2 times due to AM Container for appattempt_1567255842834_0009_000002 exited with  exitCode: 1
Failing this attempt.Diagnostics: [2019-08-31 12:54:14.542]Exception from container-launch.
Container id: container_1567255842834_0009_02_000001
Exit code: 1

[2019-08-31 12:54:14.546]Container exited with a non-zero exit code 1. Error file: prelaunch.err.
Last 4096 bytes of prelaunch.err :
Last 4096 bytes of stderr :


[2019-08-31 12:54:14.547]Container exited with a non-zero exit code 1. Error file: prelaunch.err.
Last 4096 bytes of prelaunch.err :
Last 4096 bytes of stderr :


For more detailed output, check the application tracking page: http://6437fb7eb209:32931/cluster/app/application_1567255842834_0009 Then click on links to logs of each attempt.
. Failing the application.
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.apache.hadoop.mapreduce.v2.TestMRJobs.testJobClassloader(TestMRJobs.java:531)
	at org.apache.hadoop.mapreduce.v2.TestMRJobs.testJobClassloader(TestMRJobs.java:473)
	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:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)