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https://issues.apache.org/jira/browse/PIG-4852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15385473#comment-15385473
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Adam Szita commented on PIG-4852:
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Hi,
Isn't this already covered by ExternalTupleByNthField?
I think this should get you the same result:
define myMax ExtremalTupleByNthField( '1', 'max' );
This UDF implements both Algebraic and Accumulator.
> Add accumulator implementation for MaxTupleBy1stField
> -----------------------------------------------------
>
> Key: PIG-4852
> URL: https://issues.apache.org/jira/browse/PIG-4852
> Project: Pig
> Issue Type: Improvement
> Reporter: Eyal Allweil
> Priority: Minor
> Labels: newbie, performance
>
> MaxTupleBy1stField has a regular and algebraic implementation; an accumulator
> implementation should be relatively easy to do.
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