You are viewing a plain text version of this content. The canonical link for it is here.

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

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

     [ https://issues.apache.org/jira/browse/HIVE-27115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yi Zhang updated HIVE-27115:
----------------------------
    Description: 
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, t_name gets pushed down to table r. 

 

  was:
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.

 


> 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: 3.1.3, 4.0.0-alpha-2
>            Reporter: Yi Zhang
>            Priority: Major
>
> 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, t_name gets pushed down to table r. 
>  



--
This message was sent by Atlassian Jira
(v8.20.10#820010)