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https://issues.apache.org/jira/browse/HIVE-2261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061473#comment-13061473
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John Sichi commented on HIVE-2261:
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I think we should put in some of the common base class changes from HIVE-1016
before implementing this.
> Add cleanup stages for UDFs
> ---------------------------
>
> Key: HIVE-2261
> URL: https://issues.apache.org/jira/browse/HIVE-2261
> Project: Hive
> Issue Type: Wish
> Components: Query Processor
> Reporter: Navis
> Priority: Trivial
>
> In some cases, we bind values at last stage of big SQL from other sources,
> especially from memcached. I made that kind of UDFs for internal-use.
> I found 'initialize' method of GenericUDF class is good place for making
> connections to memcached cluster, but failed to find somewhere to
> close/cleanup the connections. If there is cleaup method in GenericUDF class,
> things can be more neat. If initializing entity like map/reduce/fetch could
> be also providable to life-cycles(init/close), that makes perfect.
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