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Date: Wed, 15 Jun 2016 10:28:09 +0000 (UTC)
From: "Jesus Camacho Rodriguez (JIRA)" <jira@apache.org>
To: issues@hive.apache.org
Message-ID: <JIRA.12978170.1465828412000.3366.1465986489535@Atlassian.JIRA>
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Subject: [jira] [Work started] (HIVE-14002) Extend limit propagation to
 subsequent RS operators
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archived-at: Wed, 15 Jun 2016 10:28:11 -0000


     [ https://issues.apache.org/jira/browse/HIVE-14002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-14002 started by Jesus Camacho Rodriguez.
------------------------------------------------------
> Extend limit propagation to subsequent RS operators
> ---------------------------------------------------
>
>                 Key: HIVE-14002
>                 URL: https://issues.apache.org/jira/browse/HIVE-14002
>             Project: Hive
>          Issue Type: Improvement
>          Components: Physical Optimizer
>    Affects Versions: 2.2.0
>            Reporter: Nita Dembla
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-14002.patch
>
>
> In some occasions, for instance when RS dedup does not kick in, it is useful to propagate the limit to subsequent RS operators, as this will reduce intermediary results and impact performance. This issue covers that extension.


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