[jira] [Commented] (HIVE-1003) optimize metadata only queries

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-1003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15747837#comment-15747837 ] 

Lefty Leverenz commented on HIVE-1003:
--------------------------------------

Doc note:  This adds *hive.optimize.metadataonly* to HiveConf.java with a default value of true in release 0.8.0.

HIVE-15397 changes the default to false in release 2.2.0.

When it is documented in the wiki, this link will work:

* [Configuration Properties -- hive.optimize.metadataonly | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.optimize.metadataonly]


> optimize metadata only queries
> ------------------------------
>
>                 Key: HIVE-1003
>                 URL: https://issues.apache.org/jira/browse/HIVE-1003
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Marcin Kurczych
>             Fix For: 0.8.0
>
>         Attachments: ASF.LICENSE.NOT.GRANTED--D105.1.patch, ASF.LICENSE.NOT.GRANTED--D105.2.patch, ASF.LICENSE.NOT.GRANTED--HIVE-1003.D105.3.patch, HIVE-1003.1.patch, hive.1003.2.patch, hive.1003.3.patch, hive.1003.4.patch
>
>
> Queries like:
> select max(ds) from T 
> where ds is a partitioning column should be optimized.



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