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From "Leting Wu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAHOUT-1034) ERROR in Navie Bayes Training(trainnb)
Date Thu, 28 Jun 2012 23:53:43 GMT
Leting Wu created MAHOUT-1034:
---------------------------------

             Summary: ERROR in Navie Bayes Training(trainnb)
                 Key: MAHOUT-1034
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1034
             Project: Mahout
          Issue Type: Bug
          Components: Classification
    Affects Versions: 0.7
         Environment: Ubuntu 11.04
            Reporter: Leting Wu
            Priority: Critical


When run either examples/classify-20newsgrouops.sh or ash-email-examples.sh, trainnb always
fails:
{noformat}
INFO mapred.JobClient: Task Id : attempt_201206281546_0003_m_000000_0, Status : FAILED
java.lang.IllegalArgumentException
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
	at org.apache.mahout.classifier.naivebayes.training.WeightsMapper.setup(WeightsMapper.java:42)
	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:647)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
	at org.apache.hadoop.mapred.Child.main(Child.java:264)
{noformat}


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