Uses of Class

Packages that use MROpPlanVisitor

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

Subclasses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
 class AccumulatorOptimizer
          A visitor to optimize plans that determines if a reduce plan can run in accumulative mode.
 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
 class SampleOptimizer
          A visitor to optimize plans that have a sample job that immediately follows a load/store only MR job.
 class SecondaryKeyOptimizer

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with parameters of type MROpPlanVisitor
 void NativeMapReduceOper.visit(MROpPlanVisitor v)
 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 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.
 class MRPrinter
          A visitor mechanism printing out the logical plan.
 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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