hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15474) Extend limit propagation for chain of RS-GB-RS operators
Date Tue, 20 Dec 2016 13:56:58 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15764272#comment-15764272
] 

Jesus Camacho Rodriguez commented on HIVE-15474:
------------------------------------------------

[~ashutoshc], could you take a look? Thanks

> Extend limit propagation for chain of RS-GB-RS operators
> --------------------------------------------------------
>
>                 Key: HIVE-15474
>                 URL: https://issues.apache.org/jira/browse/HIVE-15474
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer
>    Affects Versions: 2.2.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-15474.patch
>
>
> The goal is to extend the work started in HIVE-14002.
> For instance, given the following query:
> {code:sql}
> explain
> select key, value, count(key + 1) as agg1 from src 
> group by key, value
> order by key, value, agg1 limit 20;
> {code}
> We can push the limit to the GBy operator. However, currently we do not do it.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message