[MAHOUT-1034] ERROR in Navie Bayes Training(update: seqdirectory does not give output)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.7

Environment

Ubuntu 11.04

• Assignee: Robin Anil
• Reporter: Leting Wu
• Created: 28/Jun/12 23:52
• Updated: 31/Jan/24 22:12
• Resolved: 12/Jul/12 00:34

Description

When run either examples/classify-20newsgrouops.sh or ash-email-examples.sh, trainnb always fails:

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)