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Posted to dev@hive.apache.org by "Jeff Hammerbacher (JIRA)" <ji...@apache.org> on 2011/03/30 19:35:06 UTC

[jira] [Reopened] (HIVE-2085) Document GenericUD(A|T)F

     [ https://issues.apache.org/jira/browse/HIVE-2085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jeff Hammerbacher reopened HIVE-2085:
-------------------------------------


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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