ml.shifu.guagua.master
类 MasterContext<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

java.lang.Object
  ml.shifu.guagua.master.MasterContext<MASTER_RESULT,WORKER_RESULT>

类型参数：

MASTER_RESULT - master result for computation in each iteration.

WORKER_RESULT - worker result for computation in each iteration.

public class MasterContext<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>
extends Object

MasterContext is a context object which contains all useful info used in master computation.

The info includes:

• Application ID: Job ID for Hadoop mapreduce Job, application ID for YARN application.
• Container ID: Task index for Hadoop mapreduce task, Task index for YARN Container.
• Total iteration number.
• Current iteration number.
• Worker result list for current iteration.
• Master result for current iteration which is used to be sent to workers in next iteration.

构造方法摘要

MasterContext(int totalIteration, int workers, Properties props, String appId, String containerId, String masterResultClassName, String workerResultClassName, double minWorkersRatio, long minWorkersTimeOut)

方法摘要

String	getAppId()
Object	getAttachment()
String	getContainerId()
int	getCurrentIteration()
MASTER_RESULT	getMasterResult()
String	getMasterResultClassName()
double	getMinWorkersRatio()
long	getMinWorkersTimeOut()
Properties	getProps()
int	getTotalIteration()
String	getWorkerResultClassName()
Iterable<WORKER_RESULT>	getWorkerResults()
int	getWorkers()
boolean	isFirstIteration() Whether is in first iteration, default first iteration is 1.
boolean	isInitIteration() Whether is in initiate iteration, default initiate iteration is 1.
void	setAttachment(Object attachment)
void	setCurrentIteration(int currentIteration)
void	setMasterResult(MASTER_RESULT masterResult)
void	setWorkerResults(Iterable<WORKER_RESULT> workerResults)
String	toString()

从类 java.lang.Object 继承的方法

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

构造方法详细信息

MasterContext

public MasterContext(int totalIteration,
                     int workers,
                     Properties props,
                     String appId,
                     String containerId,
                     String masterResultClassName,
                     String workerResultClassName,
                     double minWorkersRatio,
                     long minWorkersTimeOut)

方法详细信息

getContainerId

public String getContainerId()

getWorkerResults

public Iterable<WORKER_RESULT> getWorkerResults()

setWorkerResults

public void setWorkerResults(Iterable<WORKER_RESULT> workerResults)

getTotalIteration

public int getTotalIteration()

getCurrentIteration

public int getCurrentIteration()

setCurrentIteration

public void setCurrentIteration(int currentIteration)

getWorkers

public int getWorkers()

getProps

public Properties getProps()

getAppId

public String getAppId()

getMasterResult

public MASTER_RESULT getMasterResult()

setMasterResult

public void setMasterResult(MASTER_RESULT masterResult)

getMasterResultClassName

public String getMasterResultClassName()

getWorkerResultClassName

public String getWorkerResultClassName()

getMinWorkersRatio

public double getMinWorkersRatio()

getMinWorkersTimeOut

public long getMinWorkersTimeOut()

getAttachment

public Object getAttachment()

setAttachment

public void setAttachment(Object attachment)

isFirstIteration

public boolean isFirstIteration()

Whether is in first iteration, default first iteration is 1.

isInitIteration

public boolean isInitIteration()

Whether is in initiate iteration, default initiate iteration is 1.

toString

public String toString()

覆盖：

类 Object 中的 toString