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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