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From "Yifeng Geng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4345) Pushing down query conditions to support on-the-fly filtering at file parsing
Date Fri, 12 Apr 2013 05:53:16 GMT

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

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

    Description: 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.  (was: 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.)
    
> Pushing down query conditions to support on-the-fly filtering at 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
>
>
> 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.

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