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From "Zhiyuan Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-16596) CrossProductCheck failed to detect cross product between two unions
Date Fri, 05 May 2017 18:40:04 GMT
Zhiyuan Yang created HIVE-16596:
-----------------------------------

             Summary: CrossProductCheck failed to detect cross product between two unions
                 Key: HIVE-16596
                 URL: https://issues.apache.org/jira/browse/HIVE-16596
             Project: Hive
          Issue Type: Bug
            Reporter: Zhiyuan Yang
            Assignee: Zhiyuan Yang


To reproduce:
{code}
create table f (a int, b string);
set hive.auto.convert.join=false;
explain select * from (select * from f union all select * from f) a join (select * from f
union all select * from f) b;
{code}

No cross product warning is given.



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