Zhiyuan Yang created HIVE-16596:
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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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