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https://issues.apache.org/jira/browse/HIVE-6331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889137#comment-13889137
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Navis commented on HIVE-6331:
-----------------------------
UDAF was deprecated long time before HIVE-5279 and I just added the annotation
along with the patch but I should have fixed the javadoc also. Currently,
implementing GenericUDAFResolver2 or extending AbstractGenericUDAFResolver is
the standard way to implement aggregation function.
> HIVE-5279 deprecated UDAF class without explanation/documentation/alternative
> -----------------------------------------------------------------------------
>
> Key: HIVE-6331
> URL: https://issues.apache.org/jira/browse/HIVE-6331
> Project: Hive
> Issue Type: Bug
> Reporter: Lars Francke
> Priority: Minor
>
> HIVE-5279 added a @Deprecated annotation to the {{UDAF}} class. The comment
> in that class says {quote}UDAF classes are REQUIRED to inherit from this
> class.{quote}
> One of these two needs to be updated. Either remove the annotation or
> document why it was deprecated and what to use instead.
> Unfortunately [~navis] did not leave any documentation about his intentions.
> I'm happy to provide a patch once I know the intentions.
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