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https://issues.apache.org/jira/browse/HIVE-4964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13732994#comment-13732994
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Harish Butani commented on HIVE-4964:
-------------------------------------

This was not meant to be a jira for cleanup of the PTF code.
I wanted to get this in, as a precursor for HIVE-4965.

The XmlEncoder stuff in PTFUtils is a good point.  Can you share the list of 
things that you have identified for cleanup. Will do this and other cleanup as 
a separate Jira. You ok with this?
                
> Cleanup PTF code: remove code dealing with non standard sql behavior we had 
> original introduced
> -----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4964
>                 URL: https://issues.apache.org/jira/browse/HIVE-4964
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Harish Butani
>            Priority: Minor
>         Attachments: HIVE-4964.D11985.1.patch, HIVE-4964.D11985.2.patch
>
>
> There are still pieces of code that deal with:
> - supporting select expressions with Windowing
> - supporting a filter with windowing
> Need to do this before introducing  Perf. improvements. 

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