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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12305) CBO: Calcite Operator To Hive Operator (Calcite Return Path): UDAF can not pull up constant expressions
Date Mon, 02 Nov 2015 22:05:27 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986144#comment-14986144
] 

Ashutosh Chauhan commented on HIVE-12305:
-----------------------------------------

Fix in this patch is a guard against failures, but knowing which expr is constant in GBY's
aggregation function arguments could be better done using Metadata provider of Calcite. It
will be good to add a #TODO in comment for this. 
+1 LGTM

> CBO: Calcite Operator To Hive Operator (Calcite Return Path): UDAF can not pull up constant
expressions
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-12305
>                 URL: https://issues.apache.org/jira/browse/HIVE-12305
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-12305.01.patch
>
>
> to repro, run annotate_stats_groupby.q with return path turned on.



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