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Posted to dev@hive.apache.org by "ErwanMAS (JIRA)" <ji...@apache.org> on 2015/04/17 18:05:58 UTC

[jira] [Created] (HIVE-10379) Wrong result when executing with tez

ErwanMAS created HIVE-10379:
-------------------------------

             Summary: Wrong result when executing with tez 
                 Key: HIVE-10379
                 URL: https://issues.apache.org/jira/browse/HIVE-10379
             Project: Hive
          Issue Type: Bug
          Components: Tez
    Affects Versions: 0.14.0, 0.13.0
         Environment: Hortonworks sandbox 2.1.1 & 2.2.0  
            Reporter: ErwanMAS



I do a left join with a lateral view outer , too many row are generated with tez .
in map reduce , i have 125 rows , in tez 132 .....


Example :

{noformat}
  drop table foo ;

  create table foo ( dummyfoo int  ) ;
  insert into table foo select count(*) from foo ;

  select count(*) as cnt from (
      select a.val,p.code from
                        ( select cast((((one*5)+two)*5+three) as int) as val from foo
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_1 as one
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_2 as two
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_3 as three ) as a
                        left join
                        ( select dummyfoo as code from foo ) p on p.code=a.val
  ) w ;

  set hive.execution.engine=tez;
  set hive.vectorized.execution.enabled=false;

  select count(*) as cnt from (
      select a.val,p.code from
                        ( select cast((((one*5)+two)*5+three) as int) as val from foo
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_1 as one
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_2 as two
                                        lateral view outer explode(split("0,1,2,3,4",",")) tbl_3 as three ) as a
                        left join
                        ( select dummyfoo as code from foo ) p on p.code=a.val
  ) w ;
{noformat}






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