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https://issues.apache.org/jira/browse/PIG-161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589597#action_12589597
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Alan Gates commented on PIG-161:
--------------------------------
In the first implementation most evaluation functions were implemented as
EvalFunc (add, count, etc.) In the pipeline rework, in order to support types
efficiently, we're moving all the traditional ones inside the system. But
users will still be able to subclass EvalFunc in order to implement their own
UDFs.
> Rework physical plan
> --------------------
>
> Key: PIG-161
> URL: https://issues.apache.org/jira/browse/PIG-161
> Project: Pig
> Issue Type: Sub-task
> Reporter: Alan Gates
> Assignee: Alan Gates
> Attachments: arithmeticOperators.patch, incr2.patch, incr3.patch,
> incr4.patch, Phy_AbsClass.patch, pogenerate.patch, pogenerate.patch,
> pogenerate.patch
>
>
> This bug tracks work to rework all of the physical operators as described in
> http://wiki.apache.org/pig/PigTypesFunctionalSpec
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