[
https://issues.apache.org/jira/browse/HIVE-10785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907550#comment-14907550
]
Lefty Leverenz commented on HIVE-10785:
---------------------------------------
Doc note: This adds configuration parameter *hive.transpose.aggr.join* to
HiveConf.java, so it will need to be documented in the wiki for release 2.0.0.
* [Configuration Properties -- Query and DDL Execution (put at end of the
section) |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-QueryandDDLExecution]
> 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
> Labels: TODOC2.0
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
