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https://issues.apache.org/jira/browse/HIVE-5731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856504#comment-13856504
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Ashutosh Chauhan commented on HIVE-5731:
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+1
> Use new GenericUDF instead of basic UDF for UDFDate* classes
> -------------------------------------------------------------
>
> Key: HIVE-5731
> URL: https://issues.apache.org/jira/browse/HIVE-5731
> Project: Hive
> Issue Type: Improvement
> Reporter: Mohammad Kamrul Islam
> Assignee: Mohammad Kamrul Islam
> Attachments: HIVE-5731.1.patch, HIVE-5731.2.patch, HIVE-5731.3.patch,
> HIVE-5731.4.patch, HIVE-5731.5.patch, HIVE-5731.6.patch, HIVE-5731.7.patch
>
>
> GenericUDF class is the latest and recommended base class for any UDFs.
> This JIRA is to change the current UDFDate* classes extended from GenericUDF.
> The general benefit of GenericUDF is described in comments as
> "* The GenericUDF are superior to normal UDFs in the following ways: 1. It can
> accept arguments of complex types, and return complex types. 2. It can
> accept
> variable length of arguments. 3. It can accept an infinite number of
> function
> signature - for example, it's easy to write a GenericUDF that accepts
> array<int>, array<array<int>> and so on (arbitrary levels of nesting). 4.
> It
> can do short-circuit evaluations using DeferedObject."
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