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https://issues.apache.org/jira/browse/PIG-3793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13922703#comment-13922703
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Kyungho Jeon commented on PIG-3793:
-----------------------------------
Thank you for the response. I found that {{LogicalPlanData}} instance is
created and initialized when {{PigServer.getLogicalPlanData()}} is called.
Then, my concern becomes less significant.
But now I am thinking that {{LogicalPlanData}} should work as an interface (in
a general meaning, not a Java interface) to {{LogicalPlan}} rather than a
stateful object, considering that the class was added to avoid exposing
{{LogicalPlan}}. It won't be a problem in current Pig implementation right now.
But if someone (like me, actually) is playing with {{LogicalPlan}} and its
optimizers, for example {{AddForEach}}, then the fact that {{LogicalPlanData}}
computes and keeps the value might be confusing.
I have been following Pig for a year but I am still a newbie. Please forgive my
pestering. I am just trying to understand the implementation. Any comment will
be appreciated!
> Provide info on number of LogicalRelationalOperator(s) used in the script
> through LogicalPlanData
> -------------------------------------------------------------------------------------------------
>
> Key: PIG-3793
> URL: https://issues.apache.org/jira/browse/PIG-3793
> Project: Pig
> Issue Type: Improvement
> Components: data
> Affects Versions: 0.13.0
> Reporter: Prashant Kommireddi
> Assignee: Prashant Kommireddi
> Fix For: 0.13.0
>
> Attachments: PIG-3793.patch, PIG-3793_2.patch
>
>
> Its useful to have an understanding of how many operators are being used in
> the script via the API. This could allow admins to enforce
> checks/restrictions on the length/complexity of the plan in user scripts.
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