Well, it's the same problem but with an improved error message. Can you please post your exact command line invocation?

On 9/24/10 9:58 PM, Zhen Guo (JIRA) wrote:
     [ 
https://issues.apache.org/jira/browse/MAHOUT-504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12914737#action_12914737
 ]

Zhen Guo commented on MAHOUT-504:
---------------------------------

Still failed for different reason.

10/09/25 01:29:11 INFO mapred.JobClient: Task Id : 
attempt_201008261432_1574_m_000000_0, Status : FAILED
java.lang.IllegalStateException: No clusters found. Check your -c path.
        at 
org.apache.mahout.clustering.kmeans.KMeansMapper.setup(KMeansMapper.java:61)
        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)

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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