Package org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans

Class Summary

Class	Description
DotMRPrinter	This class can print an MR plan in the DOT format.
DotMRPrinter.InnerOperator	Helper class to represent the relationship of map, reduce and combine phases in an MR operator.
DotMRPrinter.InnerPlan	Helper class to represent the relationship of map, reduce and combine phases in an MR operator.
EndOfAllInputSetter	This visitor visits the MRPlan and does the following for each MROper: If the map plan or the reduce plan of the MROper has an end of all input flag present in it, this marks in the MROper whether the map has an end of all input flag set or if the reduce has an end of all input flag set.
EndOfAllInputSetter.EndOfAllInputChecker
MRIntermediateDataVisitor	An MROpPlanVisitor that gathers the paths for all intermediate data from a MROperPlan
MROperPlan	A Plan used to create the plan of Map Reduce Operators which can be converted into the Job Control object.
MROpPlanVisitor	A visitor for the MROperPlan class
MRPrinter	A visitor mechanism printing out the logical plan.
POPackageAnnotator	This visitor visits the MRPlan and does the following for each MROper - visits the POPackage in the reduce plan and finds the corresponding POLocalRearrange(s) (either in the map plan of the same oper OR reduce plan of predecessor MROper).
ScalarPhyFinder
UDFFinder
XMLMRPrinter	A visitor mechanism printing out the logical plan.