[HIVEMALL-268] train_ffm(features,label) causes NPE while train_ffm(features,label,'') works fine

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.5.2
• Fix Version/s: 0.6.0
• Assignee: Makoto Yui
• Reporter: Makoto Yui
• Created: 12/Sep/19 07:59
• Updated: 03/Oct/19 08:34
• Resolved: 03/Oct/19 08:34

Description

train_ffm(features,label) causes NPE while train_ffm(features,label,'') works fine.

Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Exception caused in the 1-th call of train()
	at hivemall.fm.FactorizationMachineUDTF.train(FactorizationMachineUDTF.java:404)
	at hivemall.fm.FactorizationMachineUDTF.process(FactorizationMachineUDTF.java:314)
	at org.apache.hadoop.hive.ql.exec.UDTFOperator.processOp(UDTFOperator.java:107)
	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:793)
	at org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:87)
	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:793)
	at org.apache.hadoop.hive.ql.exec.ExtractOperator.processOp(ExtractOperator.java:45)
	at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:262)
	... 11 more
Caused by: java.lang.NullPointerException
	at hivemall.fm.FactorizationMachineModel.initV(FactorizationMachineModel.java:391)
	at hivemall.fm.FFMStringFeatureMapModel.getV(FFMStringFeatureMapModel.java:152)
	at hivemall.fm.FieldAwareFactorizationMachineModel.predict(FieldAwareFactorizationMachineModel.java:98)
	at hivemall.fm.FieldAwareFactorizationMachineUDTF.trainTheta(FieldAwareFactorizationMachineUDTF.java:195)
	at hivemall.fm.FactorizationMachineUDTF.train(FactorizationMachineUDTF.java:401)
	... 18 more 

Issue Links

• links to: GitHub Pull Request #200