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From "Namit Jain (JIRA)" <>
Subject [jira] Resolved: (HIVE-1638) convert commonly used udfs to generic udfs
Date Tue, 19 Oct 2010 05:20:28 GMT


Namit Jain resolved HIVE-1638.

       Resolution: Fixed
    Fix Version/s: 0.7.0
     Hadoop Flags: [Reviewed]

Committed. Thanks Siying

> convert commonly used udfs to generic udfs
> ------------------------------------------
>                 Key: HIVE-1638
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Siying Dong
>             Fix For: 0.7.0
>         Attachments: HIVE-1638.1.patch, HIVE-1638.2.patch, HIVE-1638.3.patch, HIVE-1638.4.patch,
HIVE-1638.5.patch, HIVE-1638.6.patch
> Copying a mail from Joy:
> i did a little bit of profiling of a simple hive group by query today. i was surprised
to see that one of the most expensive functions were in converting the equals udf (i had some
simple string filters) to generic udfs. (primitiveobjectinspectorconverter.textconverter)
> am i correct in thinking that the fix is to simply port some of the most popular udfs
(string equality/comparison etc.) to generic udsf?

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