pattern match classes for matching patterns in physical plan
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Key: PIG-1747
URL: https://issues.apache.org/jira/browse/PIG-1747
Project: Pig
Issue Type: Improvement
Reporter: Thejas M Nair
Assignee: Thejas M Nair
Fix For: 0.9.0
Map-reduce plan optimization phase of query planning in pig uses several
visitors. Each of these visitors use custom code to identify patterns in
physical plan to determine if the optimization should be applied. Having
pattern match utility classes that works with physical plan will make writing
new visitors easier.
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