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Class org.apache.pig.impl.logicalLayer.LogicalOperator

Removed Methods
List getRequiredFields() Get a list of fields that this operator requires.
 

Added Methods
boolean isPinnedOption(Integer)  
void pinOption(Integer)  
 

Changed Methods
ProjectionMap getProjectionMap() Method was locally defined, but is now inherited from Operator. Produce a map describing how this operator modifies its projection.
 

Added Fields
boolean mIsProjectionMapComputed A boolean variable to remember if the projection map has been computed
HashSet mPinnedOptions A HashSet to indicate whether an option (such a Join Type) was pinned by the user or can be chosen at runtime by the optimizer.
ProjectionMap mProjectionMap ProjectionMap of this operator.