Suman Somasundar created MAHOUT-1635:
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Summary: Getting an exception when I provide classification labels
manually for Naive Bayes
Key: MAHOUT-1635
URL: https://issues.apache.org/jira/browse/MAHOUT-1635
Project: Mahout
Issue Type: Bug
Components: Classification
Affects Versions: 1.0
Reporter: Suman Somasundar
If I let the Naive Bayes program itself extract the classification labels, the
program runs fine. But, I get the following error when I provide the
classification labels for the dataset manually.
Error: java.lang.IllegalArgumentException: Wrong numLabels: 0. Must be > 0!
at
com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
at
org.apache.mahout.classifier.naivebayes.training.WeightsMapper.setup(WeightsMapper.java:45)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:784)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:169)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1640)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:164)
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