You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Yifeng Geng (JIRA)" <ji...@apache.org> on 2013/04/12 08:23:15 UTC

[jira] [Updated] (HIVE-4345) Pushing down query conditions to support on-the-fly filtering at the file parsing

     [ https://issues.apache.org/jira/browse/HIVE-4345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yifeng Geng updated HIVE-4345:
------------------------------

    Summary: Pushing down query conditions to support on-the-fly filtering at the file parsing  (was: Pushing down query conditions to support on-the-fly filtering at file parsing)
    
> Pushing down query conditions to support on-the-fly filtering at the file parsing
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-4345
>                 URL: https://issues.apache.org/jira/browse/HIVE-4345
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>    Affects Versions: 0.10.0
>            Reporter: Yifeng Geng
>              Labels: patch
>             Fix For: 0.10.0
>
>         Attachments: HIVE-4345.patch
>
>
> Serialize "predicate" conditions in query plan to MapredWork class, so the FileFormat class can use the conditions to do on-the-fly filtering on the files. It can improve the performance a lot for processsing certain binary files(NetCDF files for example).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira