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Posted to dev@mahout.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2012/07/09 17:33:34 UTC
[jira] [Updated] (MAHOUT-1034) ERROR in Navie Bayes
Training(trainnb)
[ https://issues.apache.org/jira/browse/MAHOUT-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-1034:
------------------------------
Priority: Major (was: Critical)
Assignee: Robin Anil
The evidence here points to a Hadoop version mismatch. The project is compatible with 0.20.205 at the moment. I don't know why 1.0.x is different in this regard, and a patch that makes it compatible with both would be welcome.
> 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}
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