org.apache.flink.optimizer.dag

类 WorksetIterationNode

java.lang.Object

org.apache.flink.optimizer.dag.OptimizerNode

org.apache.flink.optimizer.dag.TwoInputNode

org.apache.flink.optimizer.dag.WorksetIterationNode

所有已实现的接口:

EstimateProvider, IterationNode, DumpableNode<OptimizerNode>, org.apache.flink.util.Visitable<OptimizerNode>

public class WorksetIterationNode
extends TwoInputNode
implements IterationNode

A node in the optimizer's program representation for a workset iteration.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	WorksetIterationNode.SingleRootJoiner

从类继承的嵌套类/接口 org.apache.flink.optimizer.dag.OptimizerNode

OptimizerNode.UnclosedBranchDescriptor

字段概要

从类继承的字段 org.apache.flink.optimizer.dag.TwoInputNode

input1, input2, keys1, keys2

从类继承的字段 org.apache.flink.optimizer.dag.OptimizerNode

cachedPlans, closedBranchingNodes, estimatedNumRecords, estimatedOutputSize, hereJoinedBranches, id, MAX_DYNAMIC_PATH_COST_WEIGHT, onDynamicPath, openBranches, uniqueFields

构造器概要

构造器

构造器和说明
WorksetIterationNode(org.apache.flink.api.common.operators.base.DeltaIterationBase<?,?> iteration) Creates a new node with a single input for the optimizer plan.

方法概要

限定符和类型	方法和说明
void	acceptForStepFunction(org.apache.flink.util.Visitor<OptimizerNode> visitor)
void	clearInterestingProperties()
void	computeInterestingPropertiesForInputs(CostEstimator estimator) Tells the node to compute the interesting properties for its inputs.
protected void	computeOperatorSpecificDefaultEstimates(DataStatistics statistics)
void	computeUnclosedBranchStack() This method causes the node to compute the description of open branches in its sub-plan.
int	getCostWeight()
OptimizerNode	getInitialSolutionSetPredecessorNode()
OptimizerNode	getInitialWorksetPredecessorNode()
org.apache.flink.api.common.operators.base.DeltaIterationBase<?,?>	getIterationContract()
OptimizerNode	getNextWorkset()
String	getOperatorName() Gets the name of this node, which is the name of the function/operator, or data source / data sink.
protected List<OperatorDescriptorDual>	getPossibleProperties()
org.apache.flink.api.common.operators.SemanticProperties	getSemanticProperties()
TwoInputNode	getSingleRootOfStepFunction()
OptimizerNode	getSolutionSetDelta()
org.apache.flink.api.common.operators.util.FieldList	getSolutionSetKeyFields()
SolutionSetNode	getSolutionSetNode()
WorksetNode	getWorksetNode()
protected void	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	readStubAnnotations() Reads all stub annotations, i.e. which fields remain constant, what cardinality bounds the functions have, which fields remain unique.
void	setNextPartialSolution(OptimizerNode solutionSetDelta, OptimizerNode nextWorkset, org.apache.flink.api.common.ExecutionMode executionMode)
void	setPartialSolution(SolutionSetNode solutionSetNode, WorksetNode worksetNode)

从类继承的方法 org.apache.flink.optimizer.dag.TwoInputNode

accept, addLocalCandidates, getAlternativePlans, getFirstIncomingConnection, getFirstPredecessorNode, getIncomingConnections, getOperator, getSecondIncomingConnection, getSecondPredecessorNode, getSemanticPropertiesForGlobalPropertyFiltering, getSemanticPropertiesForLocalPropertyFiltering, placePipelineBreakersIfNecessary, setInput

从类继承的方法 org.apache.flink.optimizer.dag.OptimizerNode

addBroadcastConnection, addClosedBranch, addClosedBranches, addOutgoingConnection, areBranchCompatible, computeOutputEstimates, computeUnclosedBranchStackForBroadcastInputs, computeUnionOfInterestingPropertiesFromSuccessors, getBranchesForParent, getBroadcastConnectionNames, getBroadcastConnections, getClosedBranchingNodes, getDumpableInputs, getEstimatedAvgWidthPerOutputRecord, getEstimatedNumRecords, getEstimatedOutputSize, getId, getInterestingProperties, getMaxDepth, getMinimalMemoryAcrossAllSubTasks, getOpenBranches, getOptimizerNode, getOutgoingConnections, getParallelism, getPlanNode, getPredecessors, getUniqueFields, hasUnclosedBranches, haveAllOutputConnectionInterestingProperties, identifyDynamicPath, initId, isBranching, isOnDynamicPath, markAllOutgoingConnectionsAsPipelineBreaking, mergeLists, prunePlanAlternatives, prunePlanAlternativesWithCommonBranching, readUniqueFieldsAnnotation, removeClosedBranches, setBroadcastInputs, setEstimatedNumRecords, setEstimatedOutputSize, setParallelism, toString

从类继承的方法 java.lang.Object

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

构造器详细资料

WorksetIterationNode

public WorksetIterationNode(org.apache.flink.api.common.operators.base.DeltaIterationBase<?,?> iteration)

Creates a new node with a single input for the optimizer plan.

参数:

iteration - The iteration operator that the node represents.

方法详细资料

getIterationContract

public org.apache.flink.api.common.operators.base.DeltaIterationBase<?,?> getIterationContract()

getSolutionSetNode

public SolutionSetNode getSolutionSetNode()

getWorksetNode

public WorksetNode getWorksetNode()

getNextWorkset

public OptimizerNode getNextWorkset()

getSolutionSetDelta

public OptimizerNode getSolutionSetDelta()

setPartialSolution

public void setPartialSolution(SolutionSetNode solutionSetNode,
                               WorksetNode worksetNode)

setNextPartialSolution

public void setNextPartialSolution(OptimizerNode solutionSetDelta,
                                   OptimizerNode nextWorkset,
                                   org.apache.flink.api.common.ExecutionMode executionMode)

getCostWeight

public int getCostWeight()

覆盖:

getCostWeight 在类中 OptimizerNode

getSingleRootOfStepFunction

public TwoInputNode getSingleRootOfStepFunction()

getSolutionSetKeyFields

public org.apache.flink.api.common.operators.util.FieldList getSolutionSetKeyFields()

getInitialSolutionSetPredecessorNode

public OptimizerNode getInitialSolutionSetPredecessorNode()

getInitialWorksetPredecessorNode

public OptimizerNode getInitialWorksetPredecessorNode()

getOperatorName

public String getOperatorName()

从类复制的说明: OptimizerNode

Gets the name of this node, which is the name of the function/operator, or data source / data sink.

指定者:

getOperatorName 在类中 OptimizerNode

返回:

The node name.

getSemanticProperties

public org.apache.flink.api.common.operators.SemanticProperties getSemanticProperties()

覆盖:

getSemanticProperties 在类中 TwoInputNode

readStubAnnotations

protected void readStubAnnotations()

从类复制的说明: OptimizerNode

Reads all stub annotations, i.e. which fields remain constant, what cardinality bounds the functions have, which fields remain unique.

覆盖:

readStubAnnotations 在类中 OptimizerNode

computeOperatorSpecificDefaultEstimates

protected void computeOperatorSpecificDefaultEstimates(DataStatistics statistics)

指定者:

computeOperatorSpecificDefaultEstimates 在类中 OptimizerNode

getPossibleProperties

protected List<OperatorDescriptorDual> getPossibleProperties()

指定者:

getPossibleProperties 在类中 TwoInputNode

computeInterestingPropertiesForInputs

public void computeInterestingPropertiesForInputs(CostEstimator estimator)

从类复制的说明: OptimizerNode

Tells the node to compute the interesting properties for its inputs. The interesting properties for the node itself must have been computed before. The node must then see how many of interesting properties it preserves and add its own.

覆盖:

computeInterestingPropertiesForInputs 在类中 TwoInputNode

参数:

estimator - The CostEstimator instance to use for plan cost estimation.

clearInterestingProperties

public void clearInterestingProperties()

覆盖:

clearInterestingProperties 在类中 OptimizerNode

instantiate

protected void 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)

覆盖:

instantiate 在类中 TwoInputNode

computeUnclosedBranchStack

public void computeUnclosedBranchStack()

从类复制的说明: OptimizerNode

This method causes the node to compute the description of open branches in its sub-plan. An open branch describes, that a (transitive) child node had multiple outputs, which have not all been re-joined in the sub-plan. This method needs to set the openBranches field to a stack of unclosed branches, the latest one top. A branch is considered closed, if some later node sees all of the branching node's outputs, no matter if there have been more branches to different paths in the meantime.

覆盖:

computeUnclosedBranchStack 在类中 TwoInputNode

acceptForStepFunction

public void acceptForStepFunction(org.apache.flink.util.Visitor<OptimizerNode> visitor)

指定者:

acceptForStepFunction 在接口中 IterationNode