[jira] [Created] (HIVEMALL-296) NPE happens in General classifier/regressor when the number of input records is zero

["Makoto Yui (Jira)" <ji...@apache.org>]

Makoto Yui created HIVEMALL-296:
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             Summary: NPE happens in General classifier/regressor when the number of input records is zero
                 Key: HIVEMALL-296
                 URL: https://issues.apache.org/jira/browse/HIVEMALL-296
             Project: Hivemall
          Issue Type: Bug
    Affects Versions: 0.6.0
            Reporter: Makoto Yui
            Assignee: Makoto Yui
             Fix For: 0.6.2


The following error happens when the number of input records is zero.

{code}
Caused by: java.lang.NullPointerException
	at hivemall.GeneralLearnerBaseUDTF.forwardModel(GeneralLearnerBaseUDTF.java:763)
	at hivemall.GeneralLearnerBaseUDTF.close(GeneralLearnerBaseUDTF.java:560)
	at org.apache.hadoop.hive.ql.exec.UDTFOperator.closeOp(UDTFOperator.java:152)
	at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:697)
	at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:711)
	at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.close(ExecReducer.java:279)
{code}



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