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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2012/12/07 00:43:20 UTC

[jira] [Commented] (HIVE-3401) Diversify grammar for split sampling

    [ https://issues.apache.org/jira/browse/HIVE-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13526012#comment-13526012 ] 

Navis commented on HIVE-3401:
-----------------------------

My local git index seemed broken. I'll fix it.
                
> Diversify grammar for split sampling
> ------------------------------------
>
>                 Key: HIVE-3401
>                 URL: https://issues.apache.org/jira/browse/HIVE-3401
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>         Attachments: HIVE-3401.D4821.2.patch, HIVE-3401.D4821.3.patch
>
>
> Current split sampling only supports grammar like TABLESAMPLE(n PERCENT). But some users wants to specify just the size of input. It can be easily calculated with a few commands but it seemed good to support more grammars something like TABLESAMPLE(500M). 

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