org.apache.flink.optimizer.dag

类 SinkJoiner

java.lang.Object

org.apache.flink.optimizer.dag.OptimizerNode

org.apache.flink.optimizer.dag.TwoInputNode

org.apache.flink.optimizer.dag.SinkJoiner

所有已实现的接口:

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

public class SinkJoiner
extends TwoInputNode

This class represents a utility node that is not part of the actual plan. It is used for plans with multiple data sinks to transform it into a plan with a single root node. That way, the code that makes sure no costs are double-counted and that candidate selection works correctly with nodes that have multiple outputs is transparently reused.

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.TwoInputNode

input1, input2, keys1, keys2

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
SinkJoiner(OptimizerNode input1, OptimizerNode input2)

方法概要

限定符和类型	方法和说明
protected void	computeOperatorSpecificDefaultEstimates(DataStatistics statistics)
void	computeOutputEstimates(DataStatistics statistics) Causes this node to compute its output estimates (such as number of rows, size in bytes) based on the inputs and the compiler hints.
void	computeUnclosedBranchStack() This method causes the node to compute the description of open branches in its sub-plan.
String	getOperatorName() Gets the name of this node, which is the name of the function/operator, or data source / data sink.
List<DagConnection>	getOutgoingConnections() The list of outgoing connections from this node to succeeding tasks.
protected List<OperatorDescriptorDual>	getPossibleProperties()

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

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

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

addBroadcastConnection, addClosedBranch, addClosedBranches, addOutgoingConnection, areBranchCompatible, clearInterestingProperties, computeUnclosedBranchStackForBroadcastInputs, computeUnionOfInterestingPropertiesFromSuccessors, getBranchesForParent, getBroadcastConnectionNames, getBroadcastConnections, getClosedBranchingNodes, getCostWeight, getDumpableInputs, getEstimatedAvgWidthPerOutputRecord, getEstimatedNumRecords, getEstimatedOutputSize, getId, getInterestingProperties, getMaxDepth, getMinimalMemoryAcrossAllSubTasks, getOpenBranches, getOptimizerNode, 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

SinkJoiner

public SinkJoiner(OptimizerNode input1,
                  OptimizerNode input2)

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.

getOutgoingConnections

public List<DagConnection> getOutgoingConnections()

从类复制的说明: OptimizerNode

The list of outgoing connections from this node to succeeding tasks.

覆盖:

getOutgoingConnections 在类中 OptimizerNode

返回:

The list of outgoing connections.

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

getPossibleProperties

protected List<OperatorDescriptorDual> getPossibleProperties()

指定者:

getPossibleProperties 在类中 TwoInputNode

computeOutputEstimates

public void computeOutputEstimates(DataStatistics statistics)

从类复制的说明: OptimizerNode

Causes this node to compute its output estimates (such as number of rows, size in bytes) based on the inputs and the compiler hints. The compiler hints are instantiated with conservative default values which are used if no other values are provided. Nodes may access the statistics to determine relevant information.

覆盖:

computeOutputEstimates 在类中 OptimizerNode

参数:

statistics - The statistics object which may be accessed to get statistical information. The parameter may be null, if no statistics are available.

computeOperatorSpecificDefaultEstimates

protected void computeOperatorSpecificDefaultEstimates(DataStatistics statistics)

指定者:

computeOperatorSpecificDefaultEstimates 在类中 OptimizerNode