org.apache.flink.optimizer.dag

类 MapPartitionNode

java.lang.Object

org.apache.flink.optimizer.dag.OptimizerNode

org.apache.flink.optimizer.dag.SingleInputNode

org.apache.flink.optimizer.dag.MapPartitionNode

所有已实现的接口:

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

public class MapPartitionNode
extends SingleInputNode

The optimizer's internal representation of a MapPartition operator node.

嵌套类概要

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.SingleInputNode

inConn, keys

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

cachedPlans, closedBranchingNodes, costWeight, 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
MapPartitionNode(org.apache.flink.api.common.operators.SingleInputOperator<?,?,?> operator) Creates a new MapNode for the given contract.

方法概要

限定符和类型	方法和说明
protected void	computeOperatorSpecificDefaultEstimates(DataStatistics statistics) Computes the estimates for the MapPartition operator.
String	getOperatorName() Gets the name of this node, which is the name of the function/operator, or data source / data sink.
protected List<OperatorDescriptorSingle>	getPossibleProperties()
protected org.apache.flink.api.common.operators.SemanticProperties	getSemanticPropertiesForLocalPropertyFiltering()

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

accept, addLocalCandidates, computeInterestingPropertiesForInputs, computeUnclosedBranchStack, getAlternativePlans, getIncomingConnection, getIncomingConnections, getOperator, getPredecessorNode, getSemanticProperties, getSemanticPropertiesForGlobalPropertyFiltering, instantiateCandidate, setIncomingConnection, setInput

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

addBroadcastConnection, addClosedBranch, addClosedBranches, addOutgoingConnection, areBranchCompatible, clearInterestingProperties, computeOutputEstimates, computeUnclosedBranchStackForBroadcastInputs, computeUnionOfInterestingPropertiesFromSuccessors, getBranchesForParent, getBroadcastConnectionNames, getBroadcastConnections, getClosedBranchingNodes, getCostWeight, 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, readStubAnnotations, 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

MapPartitionNode

public MapPartitionNode(org.apache.flink.api.common.operators.SingleInputOperator<?,?,?> operator)

Creates a new MapNode for the given contract.

参数:

operator - The map partition contract object.

方法详细资料

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.

getPossibleProperties

protected List<OperatorDescriptorSingle> getPossibleProperties()

指定者:

getPossibleProperties 在类中 SingleInputNode

getSemanticPropertiesForLocalPropertyFiltering

protected org.apache.flink.api.common.operators.SemanticProperties getSemanticPropertiesForLocalPropertyFiltering()

覆盖:

getSemanticPropertiesForLocalPropertyFiltering 在类中 SingleInputNode

computeOperatorSpecificDefaultEstimates

protected void computeOperatorSpecificDefaultEstimates(DataStatistics statistics)

Computes the estimates for the MapPartition operator. We assume that by default, Map takes one value and transforms it into another value. The cardinality consequently stays the same.

指定者:

computeOperatorSpecificDefaultEstimates 在类中 OptimizerNode