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https://issues.apache.org/jira/browse/MAHOUT-760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064823#comment-13064823
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Sean Owen commented on MAHOUT-760:
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What JVM are you using, at what version of Mahout?
Another user reported this exact problem, but only on version 0.5 (not HEAD)
and only on the IBM JDK. Can you try HEAD?
> "org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest" test fails during install
> --------------------------------------------------------------------------
>
> Key: MAHOUT-760
> URL: https://issues.apache.org/jira/browse/MAHOUT-760
> Project: Mahout
> Issue Type: Bug
> Components: build
> Affects Versions: 0.5
> Environment: #uname -a
> Linux <hostname> 2.6.27.54-0.2-default #1 SMP 2010-10-19 18:40:07 +0200
> x86_64 x86_64 x86_64 GNU/Linux
> # java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build
> pxa6460sr9ifix-20110211_02(SR9+IZ94423))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64
> jvmxa6460sr9-20101124_69295 (JIT enabled, AOT enabled)
> J9VM - 20101124_069295
> JIT - r9_20101028_17488ifx2
> GC - 20101027_AA)
> JCL - 20110211_02
> Reporter: Chintamani
> Priority: Minor
> Labels: build-failure
> Fix For: 0.6
>
>
> mvn install core fails because of a single failed test -
> "org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest" with the following error
> (extracted from
> target/surefire-reports/org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest.txt)
> Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 6.615 sec <<<
> FAILURE!
> testStartParallelFPGrowth(org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest)
> Time elapsed: 6.587 sec <<< FAILURE!
> org.junit.ComparisonFailure: expected:<{[D=0, E=1, A=0, B=0, C]=1}> but
> was:<{[A=0, B=0, C=1, D=0, E]=1}>
> at org.junit.Assert.assertEquals(Assert.java:123)
> at org.junit.Assert.assertEquals(Assert.java:145)
> at
> org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest.testStartParallelFPGrowth(PFPGrowthTest.java:95)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:611)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
> at
> org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:119)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:101)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:611)
> at
> org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103)
> at $Proxy0.invoke(Unknown Source)
> at
> org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150)
> at
> org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:91)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69)
> Every other test in all the components succeed.
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