Is this happening to anyone else?
------------------------------------------------------------------------------- Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.184 sec <<< FAILURE! testProcessOutput(org.apache.mahout.df.mapreduce.partial.PartialBuilderTest) Time elapsed: 0.171 sec <<< ERROR! java.io.IOException: wrong value class: {null | null} is not class org.apache.mahout.math.VectorWritable at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1874) at org.apache.mahout.df.mapreduce.partial.PartialBuilder.processOutput(PartialBuilder.java:185) at org.apache.mahout.df.mapreduce.partial.PartialBuilderTest.testProcessOutput(PartialBuilderTest.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at junit.framework.TestCase.runTest(TestCase.java:168) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at junit.framework.TestSuite.runTest(TestSuite.java:232) at junit.framework.TestSuite.run(TestSuite.java:227) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:59) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:115) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:102) at org.apache.maven.surefire.Surefire.run(Surefire.java:180) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350) at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)