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https://issues.apache.org/jira/browse/MAHOUT-1325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770917#comment-13770917
]
Suneel Marthi commented on MAHOUT-1325:
---------------------------------------
That pretty much explains the mysterious astral rays that were failing random
MR tests (during parallel execution) in the run up to 0.8 release; didn't have
time then to get to the bottom of these failures.
> MapReduce unit tests cannot be run in parallel
> ----------------------------------------------
>
> Key: MAHOUT-1325
> URL: https://issues.apache.org/jira/browse/MAHOUT-1325
> Project: Mahout
> Issue Type: Bug
> Components: Integration
> Affects Versions: 0.8
> Environment: ubuntu1 Apache Jenkins CI node
> Reporter: Stevo Slavic
> Assignee: Stevo Slavic
> Priority: Minor
> Fix For: 0.9
>
> Attachments:
> org.apache.mahout.text.SequenceFilesFromMailArchivesTest-output.txt
>
>
> Mahout-Quality build job execution #2225 failed because of this test.
> Relevant build log:
> {noformat}
> [INFO] --- maven-surefire-plugin:2.16:test (default-test) @
> mahout-integration ---
> [INFO] Surefire report directory:
> /home/jenkins/jenkins-slave/workspace/Mahout-Quality/trunk/integration/target/surefire-reports
> -------------------------------------------------------
> T E S T S
> -------------------------------------------------------
> -------------------------------------------------------
> T E S T S
> -------------------------------------------------------
> Running org.apache.mahout.utils.vectors.lucene.LuceneIterableTest
> Running org.apache.mahout.utils.email.MailProcessorTest
> Running org.apache.mahout.clustering.cdbw.TestCDbwEvaluator
> Running org.apache.mahout.utils.regex.RegexMapperTest
> Running org.apache.mahout.utils.vectors.io.VectorWriterTest
> Running org.apache.mahout.utils.nlp.collocations.llr.BloomTokenFilterTest
> Running org.apache.mahout.utils.vectors.lucene.CachedTermInfoTest
> Running org.apache.mahout.clustering.TestClusterEvaluator
> Running org.apache.mahout.utils.regex.RegexUtilsTest
> Running org.apache.mahout.utils.vectors.lucene.DriverTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.17 sec - in
> org.apache.mahout.utils.regex.RegexUtilsTest
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.412 sec -
> in org.apache.mahout.utils.email.MailProcessorTest
> Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.344 sec -
> in org.apache.mahout.utils.nlp.collocations.llr.BloomTokenFilterTest
> Running org.apache.mahout.utils.vectors.csv.CSVVectorIteratorTest
> Running org.apache.mahout.clustering.TestClusterDumper
> Running org.apache.mahout.utils.vectors.VectorHelperTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.601 sec -
> in org.apache.mahout.utils.vectors.csv.CSVVectorIteratorTest
> Running org.apache.mahout.utils.vectors.arff.ARFFTypeTest
> Running org.apache.mahout.utils.vectors.arff.ARFFVectorIterableTest
> Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.383 sec -
> in org.apache.mahout.utils.vectors.VectorHelperTest
> Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.332 sec -
> in org.apache.mahout.utils.vectors.lucene.LuceneIterableTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.252 sec -
> in org.apache.mahout.utils.vectors.arff.ARFFTypeTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.369 sec -
> in org.apache.mahout.utils.vectors.lucene.CachedTermInfoTest
> Tests run: 8, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.415 sec -
> in org.apache.mahout.utils.vectors.arff.ARFFVectorIterableTest
> Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.5 sec - in
> org.apache.mahout.utils.regex.RegexMapperTest
> Running org.apache.mahout.utils.vectors.arff.DriverTest
> Running org.apache.mahout.utils.Bump125Test
> Running org.apache.mahout.utils.SplitInputTest
> Running org.apache.mahout.utils.TestConcatenateVectorsJob
> Running org.apache.mahout.utils.vectors.arff.MapBackedARFFModelTest
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.043 sec -
> in org.apache.mahout.utils.vectors.io.VectorWriterTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.362 sec -
> in org.apache.mahout.utils.Bump125Test
> Running
> org.apache.mahout.cf.taste.impl.similarity.jdbc.MySQLJDBCInMemoryItemSimilarityTest
> Running org.apache.mahout.text.SequenceFilesFromLuceneStorageTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.304 sec -
> in org.apache.mahout.utils.vectors.arff.MapBackedARFFModelTest
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.887 sec -
> in org.apache.mahout.utils.vectors.arff.DriverTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.486 sec -
> in
> org.apache.mahout.cf.taste.impl.similarity.jdbc.MySQLJDBCInMemoryItemSimilarityTest
> Running org.apache.mahout.text.TestSequenceFilesFromDirectory
> Running org.apache.mahout.text.LuceneStorageConfigurationTest
> Running org.apache.mahout.text.LuceneSegmentInputFormatTest
> Running org.apache.mahout.text.SequenceFilesFromMailArchivesTest
> Running org.apache.mahout.text.MailArchivesClusteringAnalyzerTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.265 sec -
> in org.apache.mahout.text.MailArchivesClusteringAnalyzerTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.8 sec - in
> org.apache.mahout.utils.TestConcatenateVectorsJob
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.097 sec -
> in org.apache.mahout.text.LuceneStorageConfigurationTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 3.902 sec -
> in org.apache.mahout.utils.vectors.lucene.DriverTest
> Running org.apache.mahout.text.LuceneSegmentRecordReaderTest
> Running org.apache.mahout.text.LuceneSegmentInputSplitTest
> Running org.apache.mahout.text.SequenceFilesFromLuceneStorageMRJobTest
> Running org.apache.mahout.text.SequenceFilesFromLuceneStorageDriverTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 3.237 sec -
> in org.apache.mahout.text.LuceneSegmentInputFormatTest
> Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 5.122 sec <<<
> FAILURE! - in org.apache.mahout.text.SequenceFilesFromMailArchivesTest
> testMapReduce(org.apache.mahout.text.SequenceFilesFromMailArchivesTest) Time
> elapsed: 2.333 sec <<< FAILURE!
> java.lang.AssertionError: expected:<1> but was:<0>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at org.junit.Assert.assertEquals(Assert.java:542)
> at
> org.apache.mahout.text.SequenceFilesFromMailArchivesTest.testMapReduce(SequenceFilesFromMailArchivesTest.java:153)
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 5.74 sec - in
> org.apache.mahout.text.TestSequenceFilesFromDirectory
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 4.172 sec -
> in org.apache.mahout.text.LuceneSegmentInputSplitTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 4.85 sec - in
> org.apache.mahout.text.LuceneSegmentRecordReaderTest
> Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.571 sec -
> in org.apache.mahout.clustering.TestClusterDumper
> Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.021 sec -
> in org.apache.mahout.text.SequenceFilesFromLuceneStorageTest
> Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 6.121 sec -
> in org.apache.mahout.text.SequenceFilesFromLuceneStorageMRJobTest
> Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 6.613 sec -
> in org.apache.mahout.text.SequenceFilesFromLuceneStorageDriverTest
> Tests run: 12, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.246 sec -
> in org.apache.mahout.utils.SplitInputTest
> Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.07 sec -
> in org.apache.mahout.clustering.cdbw.TestCDbwEvaluator
> Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 22.224 sec -
> in org.apache.mahout.clustering.TestClusterEvaluator
> Results :
> Failed tests:
>
> SequenceFilesFromMailArchivesTest.testMapReduce:153->Assert.assertEquals:542->Assert.assertEquals:555->Assert.assertEquals:118->Assert.failNotEquals:743->Assert.fail:88
> expected:<1> but was:<0>
> Tests run: 95, Failures: 1, Errors: 0, Skipped: 0
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Reactor Summary:
> [INFO]
> [INFO] Mahout Build Tools ................................ SUCCESS [8.296s]
> [INFO] Apache Mahout ..................................... SUCCESS [2.731s]
> [INFO] Mahout Math ....................................... SUCCESS [1:38.594s]
> [INFO] Mahout Core ....................................... SUCCESS [4:44.809s]
> [INFO] Mahout Integration ................................ FAILURE [26.458s]
> [INFO] Mahout Examples ................................... SKIPPED
> [INFO] Mahout Release Package ............................ SKIPPED
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 7:03.463s
> [INFO] Finished at: Tue Sep 03 22:40:41 UTC 2013
> [INFO] Final Memory: 62M/447M
> [INFO]
> ------------------------------------------------------------------------
> {noformat}
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