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https://issues.apache.org/jira/browse/MAPREDUCE-7259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17017056#comment-17017056
]
Ahmed Hussein commented on MAPREDUCE-7259:
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The exception error:
{code:bash}
-------------------------------------------------------------------------------
Test set: org.apache.hadoop.mapreduce.v2.TestSpeculativeExecutionWithMRApp
-------------------------------------------------------------------------------
Tests run: 4, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 207.595 s <<<
FAILURE! - in org.apache.hadoop.mapreduce.v2.TestSpeculativeExecutionWithMRApp
testSpeculateSuccessfulWithUpdateEvents[0: TaskEstimator(EstimatorClass class
org.apache.hadoop.mapreduce.v2.app.speculate.SimpleExponentialTaskRuntimeEstimator)](org.apache.hadoop.mapreduce.v2.TestSpeculativeExecutionWithMRApp)
Time elapsed: 165.266 s <<< FAILURE!
java.lang.AssertionError: Timeout while waiting for MRApp to stop
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.apache.hadoop.mapreduce.v2.app.MRApp.waitForState(MRApp.java:455)
at
org.apache.hadoop.mapreduce.v2.TestSpeculativeExecutionWithMRApp.testSpeculateSuccessfulWithUpdateEvents(TestSpeculativeExecutionWithMRApp.java:345)
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$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{code}
> testSpeculateSuccessfulWithUpdateEvents fails Intermittently
> --------------------------------------------------------------
>
> Key: MAPREDUCE-7259
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7259
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Minor
> Attachments: MAPREDUCE-7259.001.patch
>
>
> {{TestSpeculativeExecutionWithMRApp.testSpeculateSuccessfulWithUpdateEvents}}
> fails Intermittently with the exponential estimator. The problem happens
> because assertion fails waiting for the MRApp to stop.
> There maybe a need to redesign the test case because it does not work very
> well because of the racing and the timing between the speculator and the
> tasks. It works fine for the legacy estimator because the estimate is based
> on start-end rate.
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