org.apache.pig.newplan.logical.optimizer

Class LogicalPlanOptimizer

java.lang.Object

org.apache.pig.newplan.optimizer.PlanOptimizer

org.apache.pig.newplan.logical.optimizer.LogicalPlanOptimizer

public class LogicalPlanOptimizer
extends PlanOptimizer

Field Summary

Fields inherited from class org.apache.pig.newplan.optimizer.PlanOptimizer

listeners, maxIter, plan, ruleSets

Constructor Summary

Constructors

Constructor and Description
LogicalPlanOptimizer(OperatorPlan p, int iterations, Set<String> turnOffRules)
LogicalPlanOptimizer(OperatorPlan p, int iterations, Set<String> turnOffRules, PigContext pc) Create a new LogicalPlanOptimizer.

Method Summary

Modifier and Type	Method and Description
protected List<Set<Rule>>	buildRuleSets()

Methods inherited from class org.apache.pig.newplan.optimizer.PlanOptimizer

addPlanTransformListener, optimize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LogicalPlanOptimizer

public LogicalPlanOptimizer(OperatorPlan p,
                            int iterations,
                            Set<String> turnOffRules)

LogicalPlanOptimizer

public LogicalPlanOptimizer(OperatorPlan p,
                            int iterations,
                            Set<String> turnOffRules,
                            PigContext pc)

Create a new LogicalPlanOptimizer.

Parameters:

p - Plan to optimize.

iterations - Maximum number of optimizer iterations.

turnOffRules - Optimization rules to disable. "all" disables all non-mandatory rules. null enables all rules.

pc - PigContext object

Method Detail

buildRuleSets

protected List<Set<Rule>> buildRuleSets()