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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740614#action_12740614
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Namit Jain commented on HIVE-691:
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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.
http://issues.apache.org/jira/browse/HIVE-738
2. Change all tests (udf*) to have a describe function and describe function
extended.
http://issues.apache.org/jira/browse/HIVE-739
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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