[jira] Created: (HIVE-796) RCFile results missing columns from UNION ALL

[Ning Zhang (JIRA)]

RCFile results missing columns from UNION ALL
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                 Key: HIVE-796
                 URL: https://issues.apache.org/jira/browse/HIVE-796
             Project: Hadoop Hive
          Issue Type: Bug
            Reporter: Ning Zhang


create table tt(a int, b string, c string) row format serde 
"org.apache.hadoop.hive.serde2.column.ColumnarSerDe" stored as RCFile;

load data:

  1 b c
  2 e f
  3 i j

select * from (
  select b as cola from tt
  union all
  select c as cola from tt) s;

results:
  NULL
  b
  NULL
  e
  NULL
  i

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