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From "Eric Hanson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4961) Create bridge for custom UDFs to operate in vectorized mode
Date Sat, 14 Sep 2013 01:23:51 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Hanson updated HIVE-4961:
------------------------------

    Attachment: HIVE-4961.2-vectorization.patch

Removed line ends and made another minor change based on code review comments. Moved test
UDFs to utility directory to avoid test failure. Removed field from ExprNodeGenericFuncDesc
that was not needed, and made one field transient to avoid serialization. That should also
prevent some test failures due to "diff" answers changing.
                
> Create bridge for custom UDFs to operate in vectorized mode
> -----------------------------------------------------------
>
>                 Key: HIVE-4961
>                 URL: https://issues.apache.org/jira/browse/HIVE-4961
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: vectorization-branch
>            Reporter: Eric Hanson
>            Assignee: Eric Hanson
>             Fix For: vectorization-branch
>
>         Attachments: HIVE-4961.1-vectorization.patch, HIVE-4961.2-vectorization.patch,
vectorUDF.4.patch, vectorUDF.5.patch, vectorUDF.8.patch, vectorUDF.9.patch
>
>
> Suppose you have a custom UDF myUDF() that you've created to extend hive. The goal of
this JIRA is to create a facility where if you run a query that uses myUDF() in an expression,
the query will run in vectorized mode.
> This would be a general-purpose bridge for custom UDFs that users add to Hive. It would
work with existing UDFs.
> I'm considering a separate JIRA for a new kind of custom UDF implementation that is vectorized
from the beginning, to optimize performance. That is not covered by this JIRA.

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