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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-691) show documentation for user defined functions
Date Fri, 07 Aug 2009 16:23:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740614#action_12740614

Namit Jain commented on HIVE-691:

We need a couple of follow-ups on this.

1. No need to manually populate the FunctionRegistry - it should be populated from the annotations
- this will make sure that a new function which gets added does not miss documentation.


2. Change all tests (udf*) to have a describe function and describe function extended.


3. Generate the wiki automatically from the documentation

> show documentation for user defined functions
> ---------------------------------------------
>                 Key: HIVE-691
>                 URL: https://issues.apache.org/jira/browse/HIVE-691
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Prasad Chakka
>            Assignee: Emil Ibrishimov
>            Priority: Blocker
>             Fix For: 0.4.0
>         Attachments: HIVE-691.1.patch, HIVE-691.2.patch
> There are lot of functions and more of them will be added. I think it is cumbersome to
update wiki or ask users to go to wiki to find out documentation. instead each user defined
function can have an annotation containing documentation and 'show functions' command or similar
can show the documentation to users on command line. it will also be easier to update the
documentation along with code.

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