类的使用
org.apache.flink.optimizer.costs.CostEstimator

使用CostEstimator的程序包

程序包	说明
org.apache.flink.optimizer
org.apache.flink.optimizer.costs
org.apache.flink.optimizer.dag
org.apache.flink.optimizer.traversals	This package contains the various traversals over the program plan and the optimizer DAG (directed acyclic graph) that are made in the course of the optimization.

org.apache.flink.optimizer中CostEstimator的使用

参数类型为CostEstimator的org.apache.flink.optimizer中的构造器

构造器和说明
Optimizer(CostEstimator estimator, org.apache.flink.configuration.Configuration config) Creates a new optimizer instance.
Optimizer(DataStatistics stats, CostEstimator estimator, org.apache.flink.configuration.Configuration config) Creates a new optimizer instance that uses the statistics object to determine properties about the input.

org.apache.flink.optimizer.costs中CostEstimator的使用

org.apache.flink.optimizer.costs中CostEstimator的子类

限定符和类型	类和说明
class	DefaultCostEstimator A default cost estimator that has access to basic size and cardinality estimates.

org.apache.flink.optimizer.dag中CostEstimator的使用

参数类型为CostEstimator的org.apache.flink.optimizer.dag中的方法

限定符和类型	方法和说明
protected void	TwoInputNode.addLocalCandidates(Channel template1, Channel template2, List<Set<? extends NamedChannel>> broadcastPlanChannels, RequestedGlobalProperties rgps1, RequestedGlobalProperties rgps2, List<PlanNode> target, OperatorDescriptorDual.LocalPropertiesPair[] validLocalCombinations, CostEstimator estimator)
protected void	SingleInputNode.addLocalCandidates(Channel template, List<Set<? extends NamedChannel>> broadcastPlanChannels, RequestedGlobalProperties rgps, List<PlanNode> target, CostEstimator estimator)
void	SingleInputNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	DataSourceNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	BinaryUnionNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	TwoInputNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
abstract void	OptimizerNode.computeInterestingPropertiesForInputs(CostEstimator estimator) Tells the node to compute the interesting properties for its inputs.
void	DataSinkNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	WorksetIterationNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	AbstractPartialSolutionNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
void	BulkIterationNode.computeInterestingPropertiesForInputs(CostEstimator estimator)
List<PlanNode>	SingleInputNode.getAlternativePlans(CostEstimator estimator)
List<PlanNode>	DataSourceNode.getAlternativePlans(CostEstimator estimator)
List<PlanNode>	BinaryUnionNode.getAlternativePlans(CostEstimator estimator)
List<PlanNode>	TwoInputNode.getAlternativePlans(CostEstimator estimator)
abstract List<PlanNode>	OptimizerNode.getAlternativePlans(CostEstimator estimator) Computes the plan alternatives for this node, an implicitly for all nodes that are children of this node.
List<PlanNode>	DataSinkNode.getAlternativePlans(CostEstimator estimator)
List<PlanNode>	AbstractPartialSolutionNode.getAlternativePlans(CostEstimator estimator)
protected void	TwoInputNode.instantiate(OperatorDescriptorDual operator, Channel in1, Channel in2, List<Set<? extends NamedChannel>> broadcastPlanChannels, List<PlanNode> target, CostEstimator estimator, RequestedGlobalProperties globPropsReq1, RequestedGlobalProperties globPropsReq2, RequestedLocalProperties locPropsReq1, RequestedLocalProperties locPropsReq2)
protected void	WorksetIterationNode.instantiate(OperatorDescriptorDual operator, Channel solutionSetIn, Channel worksetIn, List<Set<? extends NamedChannel>> broadcastPlanChannels, List<PlanNode> target, CostEstimator estimator, RequestedGlobalProperties globPropsReqSolutionSet, RequestedGlobalProperties globPropsReqWorkset, RequestedLocalProperties locPropsReqSolutionSet, RequestedLocalProperties locPropsReqWorkset)
protected void	SingleInputNode.instantiateCandidate(OperatorDescriptorSingle dps, Channel in, List<Set<? extends NamedChannel>> broadcastPlanChannels, List<PlanNode> target, CostEstimator estimator, RequestedGlobalProperties globPropsReq, RequestedLocalProperties locPropsReq)
protected void	BulkIterationNode.instantiateCandidate(OperatorDescriptorSingle dps, Channel in, List<Set<? extends NamedChannel>> broadcastPlanChannels, List<PlanNode> target, CostEstimator estimator, RequestedGlobalProperties globPropsReq, RequestedLocalProperties locPropsReq)

org.apache.flink.optimizer.traversals中CostEstimator的使用

参数类型为CostEstimator的org.apache.flink.optimizer.traversals中的构造器

构造器和说明
InterestingPropertyVisitor(CostEstimator estimator) Creates a new visitor that computes the interesting properties for all nodes in the plan.