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Packages that use MROpPlanVisitor | |
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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 |
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Subclasses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer | |
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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 | |
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void |
MapReduceOper.visit(MROpPlanVisitor v)
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Uses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans |
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Subclasses of MROpPlanVisitor in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans | |
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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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