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jayghost edited comment on MAHOUT-1034 at 7/10/12 5:21 AM: ----------------------------------------------------------- What a pity! Tonight I try Hadoop 0.20.205 again. Btw, you mean you can run the example on Hadoop single node or Mahout Local mode? And what's your Hadoop and Mahout version now? Thx! was (Author: jayghost): What a pity! Tonight I try hadoop 0.20.205 again. Btw, you mean you can run the example on hadoop single node or Mahout Local mode? And what's your hadoop version now? Thx! > 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 > Assignee: Robin Anil > > 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} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira