Makoto Yui created HIVEMALL-296: ----------------------------------- 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} -- This message was sent by Atlassian Jira (v8.3.4#803005)