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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-6192) Optimize sum(1) to answer query using metadata
Date Mon, 13 Jan 2014 21:37:52 GMT

     [ https://issues.apache.org/jira/browse/HIVE-6192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-6192:
-----------------------------------

    Status: Patch Available  (was: Open)

> Optimize sum(1) to answer query using metadata
> ----------------------------------------------
>
>                 Key: HIVE-6192
>                 URL: https://issues.apache.org/jira/browse/HIVE-6192
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor, Statistics
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-6192.patch
>
>
> sum(1) has same semantics as count(1) so it can also be optimized in similar fashion
by answering query using stats stored in metastore.



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