[HIVE-11817] Window function max NullPointerException

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.3.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Jimmy Xiang
• Reporter: Jimmy Xiang
• Created: 14/Sep/15 19:45
• Updated: 16/Feb/16 23:51
• Resolved: 15/Sep/15 16:37

Description

This query

select key, max(value) over (order by key rows between 10 preceding and 20 following) from src1 where length(key) > 10;

fails with NPE:

Caused by: java.lang.NullPointerException
        at org.apache.hadoop.hive.ql.udf.generic.GenericUDAFMax$MaxStreamingFixedWindow.terminate(GenericUDAFMax.java:290) 
        at org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.finishPartition(WindowingTableFunction.java:477) 
        at org.apache.hadoop.hive.ql.exec.PTFOperator$PTFInvocation.finishPartition(PTFOperator.java:337) 
        at org.apache.hadoop.hive.ql.exec.PTFOperator.closeOp(PTFOperator.java:95)
        at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:617)
        at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:631)
        at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.close(ExecReducer.java:278)