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Posted to dev@mahout.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2010/09/24 21:52:35 UTC

[jira] Commented: (MAHOUT-504) Kmeans clustering error

    [ https://issues.apache.org/jira/browse/MAHOUT-504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12914619#action_12914619 ] 

Hudson commented on MAHOUT-504:
-------------------------------

Integrated in Mahout-Quality #322 (See [https://hudson.apache.org/hudson/job/Mahout-Quality/322/])
    MAHOUT-504. Fixed CLI arguments and did other refactoring of synthetic control
example. Tested CLI invocation with explicit arguments which was the source of
the problems cited in this issue. All tests run


> Kmeans clustering error
> -----------------------
>
>                 Key: MAHOUT-504
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-504
>             Project: Mahout
>          Issue Type: Bug
>            Reporter: Zhen Guo
>            Assignee: Robin Anil
>             Fix For: 0.4
>
>
> I tried the Kmeans algorithm on the Synthetic Control data. The following error appears. I tried the Canopy algorithm, it is fine. This error is from Mapper. I am using Trunk.
> 10/09/20 19:40:06 INFO mapred.JobClient: Task Id : attempt_201008261432_1324_m_000000_0, Status : FAILED
> java.lang.IllegalStateException: Cluster is empty!
> 	at org.apache.mahout.clustering.kmeans.KMeansClusterMapper.setup(KMeansClusterMapper.java:57)
> 	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:583)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:170)

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