[jira] [Created] (HIVE-18105) Aggregation of an empty set doesn't pass constants to the UDAF

[Zoltan Haindrich (JIRA)]

Zoltan Haindrich created HIVE-18105:
---------------------------------------

             Summary: Aggregation of an empty set doesn't pass constants to the 
UDAF
                 Key: HIVE-18105
                 URL: https://issues.apache.org/jira/browse/HIVE-18105
             Project: Hive
          Issue Type: Sub-task
            Reporter: Zoltan Haindrich


the groupbyoperator's logic for firstrow passes {{null}} for all parameters.
see here:
 
{here|https://github.com/apache/hive/blob/39d46e8af5a3794f7395060b890f94ddc84516e7/ql/src/java/org/apache/hadoop/hive/ql/exec/GroupByOperator.java#L1116}

this could obstruct {{compute_stats}} operations because it has a constant 
argument.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)