org.apache.flink.compiler.dag

Class ReduceNode

java.lang.Object

org.apache.flink.compiler.dag.OptimizerNode

org.apache.flink.compiler.dag.SingleInputNode

org.apache.flink.compiler.dag.ReduceNode

All Implemented Interfaces:

EstimateProvider, DumpableNode<OptimizerNode>, Visitable<OptimizerNode>

public class ReduceNode
extends SingleInputNode

The Optimizer representation of a Reduce operator.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.compiler.dag.OptimizerNode

OptimizerNode.UnclosedBranchDescriptor

Field Summary

Fields inherited from class org.apache.flink.compiler.dag.SingleInputNode

inConn, keys

Fields inherited from class org.apache.flink.compiler.dag.OptimizerNode

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

Constructor Summary

Constructors

Constructor and Description
ReduceNode(ReduceNode reducerToCopyForCombiner)
ReduceNode(ReduceOperatorBase<?,?> operator)

Method Summary

Modifier and Type	Method and Description
protected void	computeOperatorSpecificDefaultEstimates(DataStatistics statistics)
ReduceNode	getCombinerUtilityNode()
String	getName() Gets the name of this node.
ReduceOperatorBase<?,?>	getPactContract() Gets the object that specifically describes the contract of this node.
protected List<OperatorDescriptorSingle>	getPossibleProperties()

Methods inherited from class org.apache.flink.compiler.dag.SingleInputNode

accept, addLocalCandidates, computeInterestingPropertiesForInputs, computeUnclosedBranchStack, getAlternativePlans, getIncomingConnection, getIncomingConnections, getPredecessorNode, instantiateCandidate, isFieldConstant, setIncomingConnection, setInput

Methods inherited from class org.apache.flink.compiler.dag.OptimizerNode

addBroadcastConnection, addClosedBranch, addClosedBranches, addOutgoingConnection, areBranchCompatible, clearInterestingProperties, computeOutputEstimates, computeUnclosedBranchStackForBroadcastInputs, computeUnionOfInterestingPropertiesFromSuccessors, createUniqueFieldsForNode, getBranchesForParent, getBroadcastConnectionNames, getBroadcastConnections, getClosedBranchingNodes, getConstantKeySet, getCostWeight, getDegreeOfParallelism, getDumpableInputs, getEstimatedAvgWidthPerOutputRecord, getEstimatedNumRecords, getEstimatedOutputSize, getId, getInterestingProperties, getMaxDepth, getMinimalMemoryAcrossAllSubTasks, getOpenBranches, getOptimizerNode, getOutgoingConnections, getPlanNode, getPredecessors, getRemappedKeys, getUniqueFields, hasUnclosedBranches, haveAllOutputConnectionInterestingProperties, identifyDynamicPath, initId, isBranching, isOnDynamicPath, mergeLists, prunePlanAlternatives, prunePlanAlternativesWithCommonBranching, readStubAnnotations, readUniqueFieldsAnnotation, removeClosedBranches, setBroadcastInputs, setDegreeOfParallelism, setEstimatedNumRecords, setEstimatedOutputSize, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ReduceNode

public ReduceNode(ReduceOperatorBase<?,?> operator)

ReduceNode

public ReduceNode(ReduceNode reducerToCopyForCombiner)

Method Detail

getPactContract

public ReduceOperatorBase<?,?> getPactContract()

Description copied from class: OptimizerNode

Gets the object that specifically describes the contract of this node.

Overrides:

getPactContract in class SingleInputNode

Returns:

This node's contract.

getName

public String getName()

Description copied from class: OptimizerNode

Gets the name of this node. This returns either the name of the PACT, or a string marking the node as a data source or a data sink.

Specified by:

getName in class OptimizerNode

Returns:

The node name.

getPossibleProperties

protected List<OperatorDescriptorSingle> getPossibleProperties()

Specified by:

getPossibleProperties in class SingleInputNode

computeOperatorSpecificDefaultEstimates

protected void computeOperatorSpecificDefaultEstimates(DataStatistics statistics)

Specified by:

computeOperatorSpecificDefaultEstimates in class OptimizerNode

getCombinerUtilityNode

public ReduceNode getCombinerUtilityNode()