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Posted to user@mahout.apache.org by Shengjie Min <sh...@gmail.com> on 2013/11/01 07:15:32 UTC

SimpleKMeansClustering runs ok locally while IndexOutOfBoundsException on HDFS

   Hi guys,

   I am running the SimpleKmeansClustering exmaple under the env below:

   Hadoop: 2.0.0-cdh4.3.0
   mahout: 0.7-cdh4.3.0

   code is here:
   *http://www.wepaste.com/SimpleKmeansClustering/*
   *
   *
   when I run it in a local model, all the output,clusters folders,files
   just
   worked out perfect. But when I start running it against HDFS, I got
   IndexOutOfBoundsException as below:

   *
   http://www.wepaste.com/SimpleKmeansClustering-IndexOutOfBoundsException/*

   Has anybody run into this before? any thoughts are appreciated!!

   THanks,
   Shengjie

Re: SimpleKMeansClustering runs ok locally while IndexOutOfBoundsException on HDFS

Posted by Gokhan Capan <gk...@gmail.com>.

Hi Shengjie,

I believe this means the list of the prior clusters has a zero length.

Could you check if the output of the iteration prior to the failed one is
written to the path you provided properly?

Best

Gokhan


On Fri, Nov 1, 2013 at 8:15 AM, Shengjie Min <sh...@gmail.com> wrote:

>    Hi guys,
>
>    I am running the SimpleKmeansClustering exmaple under the env below:
>
>    Hadoop: 2.0.0-cdh4.3.0
>    mahout: 0.7-cdh4.3.0
>
>    code is here:
>    *http://www.wepaste.com/SimpleKmeansClustering/*
>    *
>    *
>    when I run it in a local model, all the output,clusters folders,files
>    just
>    worked out perfect. But when I start running it against HDFS, I got
>    IndexOutOfBoundsException as below:
>
>    *
>
> http://www.wepaste.com/SimpleKmeansClustering-IndexOutOfBoundsException/*
>
>    Has anybody run into this before? any thoughts are appreciated!!
>
>    THanks,
>    Shengjie
>