[jira] Commented: (MAHOUT-428) KMeansDriver: No job jar file set leads to ClassNotFoundException: org.apache.mahout.clustering.kmeans.KMeansMapper

["Grant Ingersoll (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12885534#action_12885534 ] 

Grant Ingersoll commented on MAHOUT-428:
----------------------------------------

It works for me w/o the modification.  What steps did you do to reproduce this?

I'm guessing it works for me b/c I did a mvn install first.

At any rate, the patch seems fine, too, just curious why I'm not seeing it.

> KMeansDriver: No job jar file set leads to ClassNotFoundException: org.apache.mahout.clustering.kmeans.KMeansMapper
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-428
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-428
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.4
>         Environment: ubuntu 8.10, sun jdk 1.6.0_10-b33, hadoop cluster running 0.20.2+228, build from r957113 of http://svn.apache.org/repos/asf/lucene/mahout/trunk
>            Reporter: Peter Goldstein
>         Attachments: MAHOUT-428.patch
>
>
> Running the $MAHOUT_HOME/examples/bin/build-reuters.sh script I encountered the following exception:
> 10/06/23 04:41:00 WARN mapred.JobClient: No job jar file set.  User classes may not be found. See JobConf(Class) or JobConf#setJar(String).
> 10/06/23 04:41:01 INFO input.FileInputFormat: Total input paths to process : 1
> 10/06/23 04:41:01 INFO mapred.JobClient: Running job: job_201006222301_0019
> 10/06/23 04:41:02 INFO mapred.JobClient:  map 0% reduce 0%
> 10/06/23 04:41:11 INFO mapred.JobClient: Task Id : attempt_201006222301_0019_m_000000_0, Status : FAILED
> java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.mahout.clustering.kmeans.KMeansMapper
> 	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:960)
> 	at org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:158)
> This appears to be identical in cause to MAHOUT-197 , and has an almost identical fix.  Adding a job.setJarByClass(KMeansDriver.class) line to the KMeansDriver.java file fixes the issue.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.