Package com.alibaba.graphscope.example.giraph

Class Traverse.TraverseContext

java.lang.Object

org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>

org.apache.giraph.worker.WorkerAggregatorDelegator<org.apache.hadoop.io.WritableComparable,org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>

org.apache.giraph.worker.WorkerContext

com.alibaba.graphscope.example.giraph.Traverse.TraverseContext

All Implemented Interfaces:

org.apache.giraph.aggregators.AggregatorUsage, org.apache.giraph.conf.GiraphConfigurationSettable<org.apache.hadoop.io.WritableComparable,org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>, org.apache.giraph.conf.ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.WritableComparable,org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>, org.apache.giraph.worker.WorkerAggregatorUsage, org.apache.giraph.worker.WorkerBroadcastUsage, org.apache.giraph.worker.WorkerGlobalCommUsage, org.apache.giraph.worker.WorkerIndexUsage<org.apache.hadoop.io.WritableComparable>, org.apache.giraph.worker.WorkerReduceUsage, org.apache.hadoop.io.Writable

Enclosing class:

Traverse

public static class Traverse.TraverseContext
extends WorkerContext

Constructor Summary

Constructors

Constructor	Description
TraverseContext()

Method Summary

Modifier and Type	Method	Description
void	postApplication()	Finalize the WorkerContext.
void	postSuperstep()	Execute user code.
void	preApplication()	Initialize the WorkerContext.
void	preSuperstep()	Execute user code.

Methods inherited from class org.apache.giraph.worker.WorkerContext

aggregate, getAggregatedValue, getAndClearMessagesFromOtherWorkers, getContext, getMyWorkerIndex, getSuperstep, getTotalNumEdges, getTotalNumVertices, getWorkerCount, getWorkerForVertex, incStep, logToCommandLine, readFields, reduce, reduceMerge, sendMessageToWorker, setAggregatorManager, setCurStep, setFragment, write

Methods inherited from class org.apache.giraph.worker.WorkerAggregatorDelegator

getBroadcast

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

getConf, setConf

Methods inherited from class java.lang.Object

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

Constructor Detail

TraverseContext

public TraverseContext()

Method Detail

preApplication

public void preApplication()
                    throws InstantiationException,
                           IllegalAccessException

Initialize the WorkerContext. This method is executed once on each Worker before the first superstep starts.

Specified by:

preApplication in class WorkerContext

Throws:

IllegalAccessException - Thrown for getting the class

InstantiationException - Expected instantiation in this method.

postApplication

public void postApplication()

Finalize the WorkerContext. This method is executed once on each Worker after the last superstep ends.

Specified by:

postApplication in class WorkerContext

preSuperstep

public void preSuperstep()

Execute user code. This method is executed once on each Worker before each superstep starts.

Specified by:

preSuperstep in class WorkerContext

postSuperstep

public void postSuperstep()

Execute user code. This method is executed once on each Worker after each superstep ends.

Specified by:

postSuperstep in class WorkerContext