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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737839#action_12737839
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Raghotham Murthy commented on HIVE-691:
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Right now, by just looking at the code for a UDF/UDAF, it is hard to figure out
what __FUNC__ is. Does it make sense to add the name of the function as one of
the annotations? Then, maybe later on, we can just register all classes with
names UDF*, GenericUDF*, UDAF*, GenericUDAF* in the classpath instead of
explicitly listing out each function in the FunctionRegister.
> 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
> Fix For: 0.4.0
>
> Attachments: HIVE-691.1.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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