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https://issues.apache.org/jira/browse/PIG-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13149765#comment-13149765
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Jonathan Coveney commented on PIG-1804:
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Indeed, Mathias, it is possible to allow the scripting languages to have
Algebraic and Accumulator. This was done in JRuby here
https://issues.apache.org/jira/browse/PIG-2317
> 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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