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Pig >> mail # dev >> How Logical Plan Generator works?

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How Logical Plan Generator works?
Hello Everyone

I am a newbie to pig. I was going through
https://cwiki.apache.org/PIG/guide-for-new-contributors.html, specifically
the grammar files to start off with.

I could not understand how LogicalPlanGenerator.g works by looking into the
grammar file. Also there isn't much documentation available which explains
how logical plans are generated for different pig operators. Is there any
reference from which I can learn more about the internals (especially the
logical plan generation part)?