hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Laljo John Pullokkaran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12384) Union Operator may produce incorrect result on TEZ
Date Tue, 17 Nov 2015 23:09:10 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009803#comment-15009803
] 

Laljo John Pullokkaran commented on HIVE-12384:
-----------------------------------------------

Committed to Master

> 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, 1.0.0, 1.1.0, 1.0.1, 1.2.1
>            Reporter: Laljo John Pullokkaran
>            Assignee: Laljo John Pullokkaran
>         Attachments: HIVE-12384.1.patch, HIVE-12384.2.patch, HIVE-12384.3.patch
>
>
> 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