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Posted to dev@pig.apache.org by "Daniel Dai (JIRA)" <ji...@apache.org> on 2017/02/01 00:31:51 UTC
[jira] [Commented] (PIG-1804) Alow Jython function to implement
Algebraic and/or Accumulator interfaces
[ https://issues.apache.org/jira/browse/PIG-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847782#comment-15847782 ]
Daniel Dai commented on PIG-1804:
---------------------------------
Generally looks good. I think there could be a better algebraic sample code than PyMaxAcc to illustrate the input/output schema of initial/intermed/final function, which should be the same as Java UDF, and the schema for final is typically a scalar. "PyAVG" should be a good one.
> 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: 0.16.0
> Reporter: Julien Le Dem
> Assignee: Adam Szita
> Fix For: 0.17.0
>
> Attachments: PIG-1804.0.patch
>
>
> 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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