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https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585853#action_12585853
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Pi Song commented on PIG-158:
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+1 For this new design. Now responsibilities are separated. It's up to
PlanVisitor's implementation whether it has to look into inner plans and in
such cases helper methods are provided in the base class.
@Shravan: From Alan's sample LOVisitor code, after you pop a walker back, you
will have w and currentWalker, which hold inner plan state and output plan
state respectively. You should be able to manipulate them from here.
> Rework logical plan
> -------------------
>
> Key: PIG-158
> URL: https://issues.apache.org/jira/browse/PIG-158
> Project: Pig
> Issue Type: Sub-task
> Components: impl
> Reporter: Alan Gates
> Assignee: Alan Gates
> Attachments: logical_operators.patch, logical_operators_rev_1.patch,
> logical_operators_rev_2.patch, logical_operators_rev_3.patch,
> visitorWalker.patch
>
>
> Rework the logical plan in line with
> http://wiki.apache.org/pig/PigExecutionModel
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