[jira] [Created] (MAHOUT-1411) Random test failures from TDigestTest

["Suneel Marthi (JIRA)" <ji...@apache.org>]

Suneel Marthi created MAHOUT-1411:
-------------------------------------

             Summary: Random test failures from TDigestTest
                 Key: MAHOUT-1411
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1411
             Project: Mahout
          Issue Type: Bug
          Components: Math
    Affects Versions: 0.8
            Reporter: Suneel Marthi
            Assignee: Suneel Marthi
            Priority: Minor
             Fix For: 0.9


Seeing random test failures like below from TDigestTest. These errors are not repeatable. 

{Code}

testUniform(org.apache.mahout.math.stats.TDigestTest)  Time elapsed: 0.356 sec  <<< FAILURE!
java.lang.AssertionError: expected:<0.5> but was:<0.50578>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:743)
	at org.junit.Assert.assertEquals(Assert.java:494)
	at org.junit.Assert.assertEquals(Assert.java:592)
	at org.apache.mahout.math.stats.TDigestTest.runTest(TDigestTest.java:373)
	at org.apache.mahout.math.stats.TDigestTest.testUniform(TDigestTest.java:79)

Results :

Failed tests: 
  TDigestTest.testUniform:79->runTest:373 expected:<0.5> but was:<0.50578>

{Code}

{Code}
Tests run: 9, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 40.063 sec
<<< FAILURE! - in org.apache.mahout.math.stats.TDigestTest
testSequentialPoints(org.apache.mahout.math.stats.TDigestTest)  Time
elapsed: 4.674 sec  <<< FAILURE!
java.lang.AssertionError: expected:<0.5> but was:<0.49489>
{Code}





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