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https://issues.apache.org/jira/browse/PIG-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13149628#comment-13149628
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Mathias Herberts commented on PIG-1804:
---------------------------------------

Actually I take that back, this is what the Documentation seemed to imply. When 
looking at the source code for FuncSpec, it appears that what 
get{Initial,Intermed,Final} return is really a funcspec which can contain 
parameters, so my previous comment is null and void.
                
> Alow Jython function to implement Algebraic and/or Accumulator interfaces
> -------------------------------------------------------------------------
>
>                 Key: PIG-1804
>                 URL: https://issues.apache.org/jira/browse/PIG-1804
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>    Affects Versions: 0.9.0
>            Reporter: Julien Le Dem
>
> Currently Python UDFs can only be simple functions. For performance 
> improvements in advanced use cases it should be possible to extend Algebraic 
> and/or Accumulator interfaces

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