Uses of Class
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans.MROpPlanVisitor

Packages that use MROpPlanVisitor
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer   
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans   
 

Uses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
 

Subclasses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
 class CombinerOptimizer
          Optimize map reduce plans to use the combiner where possible.
 class KeyTypeDiscoveryVisitor
          A visitor to figure out the type of the key for the map plan this is needed when the key is null to create an appropriate NullableXXXWritable object
 

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with parameters of type MROpPlanVisitor
 void MapReduceOper.visit(MROpPlanVisitor v)
           
 

Uses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans
 

Subclasses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans
 class MRPrinter
          A visitor mechanism printing out the logical plan.
 class MRStreamHandler
          This visitor visits the MRPlan and does the following for each MROper - If the map plan or the reduce plan of the MROper has a POStream in it, this marks in the MROper whether the map has a POStream or if the reduce has a POStream.
 class 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).
 



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