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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10785) Support aggregate push down through joins
Date Thu, 24 Sep 2015 21:27:04 GMT

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

Ashutosh Chauhan updated HIVE-10785:
------------------------------------
    Issue Type: New Feature  (was: Bug)

> Support aggregate push down through joins
> -----------------------------------------
>
>                 Key: HIVE-10785
>                 URL: https://issues.apache.org/jira/browse/HIVE-10785
>             Project: Hive
>          Issue Type: New Feature
>          Components: CBO, Logical Optimizer
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Ashutosh Chauhan
>             Fix For: 2.0.0
>
>         Attachments: HIVE-10785.2.patch, HIVE-10785.3.patch, HIVE-10785.4.patch, HIVE-10785.5.patch,
HIVE-10785.6.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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