org.apache.giraph.examples

Class SimpleMasterComputeComputation.SimpleMasterComputeWorkerContext

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

org.apache.giraph.examples.SimpleMasterComputeComputation.SimpleMasterComputeWorkerContext

All Implemented Interfaces:

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

Enclosing class:

SimpleMasterComputeComputation

public static class SimpleMasterComputeComputation.SimpleMasterComputeWorkerContext
extends WorkerContext

Worker context used with SimpleMasterComputeComputation.

Constructor Summary

Constructors

Constructor and Description
SimpleMasterComputeWorkerContext()

Method Summary

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

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

getAndClearMessagesFromOtherWorkers, getContext, getMyWorkerIndex, getSuperstep, getTotalNumEdges, getTotalNumVertices, getWorkerCount, getWorkerForVertex, logToCommandLine, readFields, sendMessageToWorker, setGraphState, setupSuperstep, write

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

aggregate, getAggregatedValue, getBroadcast, reduce, reduceMerge, setWorkerGlobalCommUsage

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

SimpleMasterComputeWorkerContext

public SimpleMasterComputeWorkerContext()

Method Detail

preApplication

public void preApplication()
                    throws InstantiationException,
                           IllegalAccessException

Description copied from class: WorkerContext

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

Specified by:

preApplication in class WorkerContext

Throws:

InstantiationException - Expected instantiation in this method.

IllegalAccessException - Thrown for getting the class

preSuperstep

public void preSuperstep()

Description copied from class: WorkerContext

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()

Description copied from class: WorkerContext

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

Specified by:

postSuperstep in class WorkerContext

postApplication

public void postApplication()

Description copied from class: WorkerContext

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

Specified by:

postApplication in class WorkerContext

setFinalSum

public static void setFinalSum(double sum)

getFinalSum

public static double getFinalSum()