hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Laljo John Pullokkaran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12384) Union Operator may produce incorrect result on TEZ
Date Wed, 11 Nov 2015 21:13:10 GMT
Laljo John Pullokkaran created HIVE-12384:
---------------------------------------------

             Summary: Union Operator may produce incorrect result on TEZ
                 Key: HIVE-12384
                 URL: https://issues.apache.org/jira/browse/HIVE-12384
             Project: Hive
          Issue Type: Bug
          Components: Hive
    Affects Versions: 0.14.0
            Reporter: Laljo John Pullokkaran
            Assignee: Laljo John Pullokkaran


Union queries may produce incorrect result on TEZ.
TEZ removes union op, thus might loose the implicit cast in union op.

Reproduction test case:
set hive.cbo.enable=false;
set hive.execution.engine=tez;
select (x/sum(x) over())  as y from(select cast(1 as decimal(10,0))  as x from (select * from
src limit 2)s1 union all select cast(1 as decimal(10,0)) x from (select * from src limit 2)
s2 union all select '100000000' x from (select * from src limit 2) s3)u order by y;

select (x/sum(x) over()) as y from(select cast(1 as decimal(10,0))  as x from (select * from
src limit 2)s1 union all select cast(1 as decimal(10,0)) x from (select * from src limit 2)
s2 union all select cast (null as string) x from (select * from src limit 2) s3)u order by
y;



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message