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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-18201) Disable XPROD_EDGE for sq_count_check() created for scalar subqueries
Date Tue, 31 Jul 2018 01:57:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-18201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-18201:
------------------------------------
    Attachment: HIVE-18201.2.patch

> Disable XPROD_EDGE for sq_count_check()  created for scalar subqueries
> ----------------------------------------------------------------------
>
>                 Key: HIVE-18201
>                 URL: https://issues.apache.org/jira/browse/HIVE-18201
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Nita Dembla
>            Assignee: Ashutosh Chauhan
>            Priority: Major
>         Attachments: HIVE-18201.1.patch, HIVE-18201.2.patch, query6.explain2.out
>
>
> sq_count_check()  will either return an error at runtime or a single row. In case of
query6, the subquery has avg() function that should return a single row. Attaching the explain.

> This does not need an x-prod, because it is not useful to shuffle the big table side
for a cross-product against 1 row.



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