hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vladimir Rodionov (JIRA)" <>
Subject [jira] Commented: (HIVE-1638) convert commonly used udfs to generic udfs
Date Wed, 29 Sep 2010 19:41:35 GMT


Vladimir Rodionov commented on HIVE-1638:

OK, thanks for clarification. A couple questions more: 

1. How large is your cluster?
2. Is it typical simple query latency in Hive - hours?

> convert commonly used udfs to generic udfs
> ------------------------------------------
>                 Key: HIVE-1638
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Siying Dong
>         Attachments: HIVE-1638.1.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?

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message