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From Sean Owen <sro...@gmail.com>
Subject Re: Problems running examples
Date Sun, 05 Jun 2011 18:56:08 GMT
This all sounds a load like things that were fixed a little while ago. Are
you on version 0.5, or better yet, SVN HEAD?

The rest, I don't know, would have to defer to the author of that bit.

On Sun, Jun 5, 2011 at 7:07 PM, Mark <static.void.dev@gmail.com> wrote:

> Hi all. I'm trying to run the examples/bin/build-reuters.sh but I continue
> to run into the following exception.
>
> INFO: Deleting mahout-work/reuters-kmeans-clusters
> Jun 5, 2011 10:29:37 AM org.apache.hadoop.util.NativeCodeLoader <clinit>
> WARNING: Unable to load native-hadoop library for your platform... using
> builtin-java classes where applicable
> Jun 5, 2011 10:29:37 AM org.apache.hadoop.io.compress.CodecPool
> getCompressor
> INFO: Got brand-new compressor
> Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0,
> Size: 0
>    at java.util.ArrayList.RangeCheck(ArrayList.java:547)
>    at java.util.ArrayList.get(ArrayList.java:322)
>    at
> org.apache.mahout.clustering.kmeans.RandomSeedGenerator.buildRandom(RandomSeedGenerator.java:108)
>    at
> org.apache.mahout.clustering.kmeans.KMeansDriver.run(KMeansDriver.java:101)
>    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>    at
> org.apache.mahout.clustering.kmeans.KMeansDriver.main(KMeansDriver.java:58)
>    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.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
>    at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
>    at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:187)
>
> I am also confused reading the build-reuters.sh code itself. There seems to
> be some disjunction between what is expected to be local and what should be
> on HDFS. For example on the comments on 77-79 are:
>
> # we know reuters-out-seqdir exists on a local disk at
> # this point, if we're running in clustered mode,
> # copy it up to hdfs
>
> However upon inspection you'll notice that the reueters-out-seqdir is
> actually on HDFS.  It seems like the seqdirectory will never write to local
> disk... even with the MAHOUT_LOCAL=true flag set.
>
> Any ideas?
>
> Thanks
>

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