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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10785) Support aggregate push down through joins
Date Tue, 22 Sep 2015 05:39:04 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-10785:
------------------------------------
    Attachment: HIVE-10785.3.patch

> Support aggregate push down through joins
> -----------------------------------------
>
>                 Key: HIVE-10785
>                 URL: https://issues.apache.org/jira/browse/HIVE-10785
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO, Logical Optimizer
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-10785.2.patch, HIVE-10785.3.patch, HIVE-10785.patch
>
>
> Enable {{AggregateJoinTransposeRule}} in CBO that pushes Aggregate through Join operators.
The rule has been extended in Calcite 1.4 to cover complex cases e.g. Aggregate operators
comprising UDAF. The decision on whether to push the Aggregate through Join or not should
be cost-driven.



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