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From "Richard Lee (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-309) FunctionRegistry should allow loading UDFs and UDAFs from property file
Date Fri, 13 Mar 2009 00:54:50 GMT

    [ https://issues.apache.org/jira/browse/HIVE-309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681566#action_12681566
] 

Richard Lee commented on HIVE-309:
----------------------------------

I couldn't seem to get the hive-udf.properties to be picked up by the TestCliDriver.. I tried
the properties file to the test.classpath, and explicitly including it into the test-udf.jar...
but no love.

The contents of my properties file is:
udf.PREFIX.testfoo=testfoo,org.apache.hadoop.hive.ql.udf.UDFConcat
udaf.testbar=testbar,org.apache.hadoop.hive.ql.udf.UDAFSum

and the .q file which  should excersize these test functions contains:

SELECT testfoo(cast(src.key as string), src.value) FROM src WHERE src.key = 86;

SELECT testbar(src.key) FROM src;


If anyone has a suggestion as to how to modify the build process to pick up the properties
file... i'd appreciate it :)

> FunctionRegistry should allow loading UDFs and UDAFs from property file
> -----------------------------------------------------------------------
>
>                 Key: HIVE-309
>                 URL: https://issues.apache.org/jira/browse/HIVE-309
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Richard Lee
>         Attachments: hive-external-functions-2.diff, hive-external-functions.diff
>
>
> FunctionRegistry.java hard code all UDF, UDAF definitions in a static initializer.  There
is no way to add new functions without directly modifying this file.  
> FunctionRegistry SHOULD look for a property file in which new functions and their implementations
can be specified.  This will allow third parties to extend hive without maintaining patches
against the codebase. 

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