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https://issues.apache.org/jira/browse/HIVE-2085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Hammerbacher reopened HIVE-2085:
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It's ridiculous to close an issue as "Won't Fix" that many people think should
be fixed.
> Document GenericUD(A|T)F
> ------------------------
>
> Key: HIVE-2085
> URL: https://issues.apache.org/jira/browse/HIVE-2085
> Project: Hive
> Issue Type: Improvement
> Components: Documentation
> Reporter: Lars Francke
> Priority: Minor
>
> GenericUDFs are very poorly documented, this includes everything they relate
> to:
> * ObjectInspector (JavaDoc not really helpful for someone not familiar with
> Hive)
> * ObjectInspectorFactory
> * ObjectInspectorConverters
> * ...
> An example would help as well as a unit test for one of the built in
> GenericUDFs. Writing a normal UDF is pretty well documented but GenericUDFs
> (and UDTF/UDAF) require more knowledge about the inner workings of Hive and
> that could be documented better.
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