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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-14002) Extend limit propagation to subsequent RS operators
Date Thu, 16 Jun 2016 15:36:05 GMT

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

Jesus Camacho Rodriguez updated HIVE-14002:
-------------------------------------------
    Attachment: HIVE-14002.02.patch

> 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: 2.1.0
>            Reporter: Nita Dembla
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-14002.01.patch, HIVE-14002.02.patch, 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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