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Posted to dev@hive.apache.org by "Yi Zhang (Jira)" <ji...@apache.org> on 2023/03/01 07:26:00 UTC

[jira] [Created] (HIVE-27115) HiveInputFormat column project push down wrong fields (MR)

Yi Zhang created HIVE-27115:
-------------------------------

             Summary: HiveInputFormat column project push down wrong fields (MR)
                 Key: HIVE-27115
                 URL: https://issues.apache.org/jira/browse/HIVE-27115
             Project: Hive
          Issue Type: Bug
          Components: Hive
    Affects Versions: 4.0.0-alpha-2, 3.1.3
            Reporter: Yi Zhang


For query such as 

select * from (

select r_name from r

union all

select t_name from t

) unioned

 

in MR execution, when column project push down for splits on table r, it is t_name.

 



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