Review Request: HIVE-2794: Aggregations without grouping should return NULL when applied to partitioning column of a partitionless table

[Zhenxiao Luo]

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Review request for hive and Carl Steinbach.


Summary
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HIVE-2794. Aggregations without grouping should return NULL when applied to 
partitioning column of a partitionless table


This addresses bug HIVE-2794.
    https://issues.apache.org/jira/browse/HIVE-2794


Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/exec/MapOperator.java 2553931 
  ql/src/test/queries/clientpositive/partInit.q PRE-CREATION 
  ql/src/test/results/clientpositive/metadataonly1.q.out 1bb96a1 
  ql/src/test/results/clientpositive/partInit.q.out PRE-CREATION 

Diff: https://reviews.apache.org/r/5323/diff


Testing
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partInit.q is added. metadataonly1.q.out is updated


Thanks,

Zhenxiao