Package org.apache.wayang.giraph.operators

Class GiraphPageRankOperator

java.lang.Object

org.apache.wayang.core.plan.wayangplan.OperatorBase

org.apache.wayang.core.plan.wayangplan.UnaryToUnaryOperator<Tuple2<Long,Long>,Tuple2<Long,Float>>

org.apache.wayang.basic.operators.PageRankOperator

org.apache.wayang.giraph.operators.GiraphPageRankOperator

All Implemented Interfaces:

Serializable, ActualOperator, ElementaryOperator, ExecutionOperator, Operator, GiraphExecutionOperator

public class GiraphPageRankOperator
extends PageRankOperator
implements GiraphExecutionOperator

PageRank Operator implementation for the GiraphPlatform.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

OperatorBase.GsonSerializer

Field Summary

Fields inherited from class org.apache.wayang.basic.operators.PageRankOperator

dampingFactor, DEFAULT_DAMPING_FACTOR, DEFAULT_GRAPH_DENSITIY, graphDensity, numIterations

Fields inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

inputSlots, outputSlots, STANDARD_OPERATOR_ARGS

Fields inherited from interface org.apache.wayang.core.plan.wayangplan.Operator

FIRST_EPOCH

Constructor Summary

Constructors

Constructor	Description
GiraphPageRankOperator(Integer numIterations)
GiraphPageRankOperator(PageRankOperator pageRankOperator)

Method Summary

Modifier and Type	Method	Description
Tuple<Collection<ExecutionLineageNode>,Collection<ChannelInstance>>	execute(ChannelInstance[] inputChannelInstances, ChannelInstance[] outputChannelInstances, GiraphExecutor giraphExecutor, OptimizationContext.OperatorContext operatorContext)	Evaluates this operator.
Collection<String>	getLoadProfileEstimatorConfigurationKeys()	Provide the Configuration keys for the LoadProfileEstimator specification of this instance.
String	getPathOut(Configuration configuration)
Platform	getPlatform()
List<ChannelDescriptor>	getSupportedInputChannels(int index)	Display the supported Channels for a certain InputSlot.
List<ChannelDescriptor>	getSupportedOutputChannels(int index)	Display the supported Channels for a certain OutputSlot.
void	setPathOut(String path, Configuration configuration)

Methods inherited from class org.apache.wayang.basic.operators.PageRankOperator

createCardinalityEstimator, getDampingFactor, getGraphDensity, getNumIterations

Methods inherited from class org.apache.wayang.core.plan.wayangplan.UnaryToUnaryOperator

getInput, getInputType, getOutput, getOutputType

Methods inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

accept, addBroadcastInput, addTargetPlatform, at, collectMappedInputSlots, collectMappedOutputSlots, copy, createCopy, getAllInputs, getAllOutputs, getCardinalityEstimator, getContainer, getEpoch, getName, getOriginal, getSimpleClassName, getTargetPlatforms, isAuxiliary, isSupportingBroadcastInputs, propagateInputCardinality, propagateOutputCardinality, setAuxiliary, setCardinalityEstimator, setContainer, setEpoch, setName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ActualOperator

accept

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ElementaryOperator

createCardinalityEstimator, getCardinalityEstimator, isAuxiliary, setAuxiliary, setCardinalityEstimator

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ExecutionOperator

copy, createLoadProfileEstimator, createOutputChannelInstances, getLimitBaseKey, getLoadProfileEstimatorConfigurationKey, getOriginal, getOutputChannelDescriptor, isFiltered

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.Operator

addBroadcastInput, addTargetPlatform, broadcastTo, broadcastTo, collectMappedInputSlots, collectMappedOutputSlots, connectTo, connectTo, getAllInputs, getAllOutputs, getCardinalityPusher, getContainer, getEffectiveOccupant, getEffectiveOccupant, getEpoch, getEstimationContextProperties, getForwards, getInnermostLoop, getInput, getInput, getLoopStack, getName, getNumBroadcastInputs, getNumInputs, getNumOutputs, getNumRegularInputs, getOuterInputSlot, getOutermostInputSlot, getOutermostOutputSlots, getOutput, getOutput, getParent, getTargetPlatforms, isAlternative, isConversion, isElementary, isExecutionOperator, isFeedbackInput, isFeedforwardOutput, isLoopHead, isLoopSubplan, isOwnerOf, isReading, isSink, isSource, isSubplan, isSupportingBroadcastInputs, isUnconnected, propagateInputCardinality, propagateOutputCardinality, propagateOutputCardinality, replaceWith, setContainer, setEpoch, setInput, setName, setOutput

Constructor Details

GiraphPageRankOperator

public GiraphPageRankOperator(Integer numIterations)

GiraphPageRankOperator

public GiraphPageRankOperator(PageRankOperator pageRankOperator)

Method Details

execute

public Tuple<Collection<ExecutionLineageNode>,Collection<ChannelInstance>> execute(ChannelInstance[] inputChannelInstances,
 ChannelInstance[] outputChannelInstances,
 GiraphExecutor giraphExecutor,
 OptimizationContext.OperatorContext operatorContext)

Description copied from interface: GiraphExecutionOperator

Evaluates this operator. Takes a set of inputs and produces a set of outputs.

In addition, this method should give feedback of what this instance was doing by wiring the LazyExecutionLineageNodes of input and ouput ChannelInstances and providing a Collection of executed OptimizationContext.OperatorContexts.

Specified by:

execute in interface GiraphExecutionOperator

Parameters:

inputChannelInstances - ChannelInstances that satisfy the inputs of this operator

outputChannelInstances - ChannelInstances that collect the outputs of this operator

operatorContext - OptimizationContext.OperatorContext of this instance

Returns:

Collections of what has been executed and produced

getPlatform

public Platform getPlatform()

Specified by:

getPlatform in interface ExecutionOperator

Returns:

the platform that can run this operator

getLoadProfileEstimatorConfigurationKeys

public Collection<String> getLoadProfileEstimatorConfigurationKeys()

Description copied from interface: ExecutionOperator

Provide the Configuration keys for the LoadProfileEstimator specification of this instance.

Specified by:

getLoadProfileEstimatorConfigurationKeys in interface ExecutionOperator

Returns:

the Configuration keys

getSupportedInputChannels

public List<ChannelDescriptor> getSupportedInputChannels(int index)

Description copied from interface: ExecutionOperator

Display the supported Channels for a certain InputSlot.

Specified by:

getSupportedInputChannels in interface ExecutionOperator

Parameters:

index - the index of the InputSlot

Returns:

an List of Channels' Classes, ordered by their preference of use

getSupportedOutputChannels

public List<ChannelDescriptor> getSupportedOutputChannels(int index)

Description copied from interface: ExecutionOperator

Display the supported Channels for a certain OutputSlot.

Specified by:

getSupportedOutputChannels in interface ExecutionOperator

Parameters:

index - the index of the OutputSlot

Returns:

an List of Channels' Classes, ordered by their preference of use

See Also:

• ExecutionOperator.getOutputChannelDescriptor(int)

setPathOut

public void setPathOut(String path,
 Configuration configuration)

getPathOut

public String getPathOut(Configuration configuration)