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From "Carl Steinbach (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2385) Local Mode can be more aggressive if LIMIT optimization is on
Date Fri, 26 Aug 2011 18:21:29 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Carl Steinbach updated HIVE-2385:
---------------------------------

      Component/s: Query Processor
    Fix Version/s: 0.8.0

> Local Mode can be more aggressive if LIMIT optimization is on
> -------------------------------------------------------------
>
>                 Key: HIVE-2385
>                 URL: https://issues.apache.org/jira/browse/HIVE-2385
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Siying Dong
>            Assignee: Siying Dong
>            Priority: Minor
>             Fix For: 0.8.0
>
>         Attachments: HIVE-2385.1.patch, HIVE-2385.2.patch
>
>
> Local mode now depends on total input data, but for LIMIT queries with no filtering,
the data actually scanned can be much less and it's relatively predictable. We can place local
mode more aggressively.

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