Package com.alibaba.graphscope.example.giraph

Class PageRank.SimplePageRankWorkerContext

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.PageRank.SimplePageRankWorkerContext

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:

PageRank

public static class PageRank.SimplePageRankWorkerContext
extends WorkerContext

Worker context used with PageRank.

Constructor Summary

Constructors

Constructor	Description
SimplePageRankWorkerContext()

Method Summary

Modifier and Type	Method	Description
static double	getFinalMax()
static double	getFinalMin()
static long	getFinalSum()
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

SimplePageRankWorkerContext

public SimplePageRankWorkerContext()

Method Detail

getFinalMax

public static double getFinalMax()

getFinalMin

public static double getFinalMin()

getFinalSum

public static long getFinalSum()

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

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

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