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From Sean Owen <sro...@gmail.com>
Subject Re: Installation Help
Date Thu, 01 Apr 2010 17:49:33 GMT
A-ha. It's trying to execute a command called chmod that is a standard
Unix/Linux/OS X command but not present on Windows.

I am not sure why Hadoop tries this on Windows though... surely it
supports Windows? I somehow think we've seen this before and I forget
what the story was.

It's not something to do with Mahout unfortunately.

One possible solution is to install Cygwin, which gives you a little
Unix-like environment on Windows. It has a chmod binary. Running via
Cygwin might work.

On Thu, Apr 1, 2010 at 6:46 PM, Eleftherios Spyromitros
<espyromi@csd.auth.gr> wrote:
> OK guys you are being very helpful. Here is an error file
> (I think that most if not all error files complain about chmod..
> does this have to do with admin privilages??):
>
> -------------------------------------------------------------------------------
> Test set: org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest
> -------------------------------------------------------------------------------
> Tests run: 3, Failures: 1, Errors: 2, Skipped: 0, Time elapsed: 0.14 sec <<<
FAILURE!
> testStartParallelCounting(org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest)  Time elapsed:
0.063 sec  <<< ERROR!
> java.io.IOException: Cannot run program "chmod": CreateProcess error=2, The system cannot
find the file specified
>        at java.lang.ProcessBuilder.start(ProcessBuilder.java:460)
>        at org.apache.hadoop.util.Shell.runCommand(Shell.java:149)
>        at org.apache.hadoop.util.Shell.run(Shell.java:134)
>        at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286)
>        at org.apache.hadoop.util.Shell.execCommand(Shell.java:354)
>        at org.apache.hadoop.util.Shell.execCommand(Shell.java:337)
>        at org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:481)
>        at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:473)
>        at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:280)
>        at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:266)
>        at org.apache.hadoop.mapred.JobClient.configureCommandLineOptions(JobClient.java:573)
>        at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:761)
>        at org.apache.hadoop.mapreduce.Job.submit(Job.java:432)
>        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:447)
>        at org.apache.mahout.fpm.pfpgrowth.PFPGrowth.startParallelCounting(PFPGrowth.java:318)
>        at org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest.testStartParallelCounting(PFPGrowthTest.java:89)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        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:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
>        at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)
> Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file
specified
>        at java.lang.ProcessImpl.create(Native Method)
>        at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
>        at java.lang.ProcessImpl.start(ProcessImpl.java:30)
>        at java.lang.ProcessBuilder.start(ProcessBuilder.java:453)
>        ... 38 more

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