ml.shifu.guagua.worker
类 WorkerContext<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

java.lang.Object
  ml.shifu.guagua.worker.WorkerContext<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 WorkerContext<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>
extends Object

WorkerContext is a context to contain all useful info which can be used in worker 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 for current iteration after computation which is used to be sent to master.
• Master result from last iteration.

构造方法摘要

WorkerContext(int totalIteration, String appId, Properties props, String containerId, List<GuaguaFileSplit> fileSplits, String masterResultClassName, String workerResultClassName)

方法摘要

String	getAppId()
Object	getAttachment()
String	getContainerId()
int	getCurrentIteration()
List<GuaguaFileSplit>	getFileSplits()
MASTER_RESULT	getLastMasterResult()
String	getMasterResultClassName()
Properties	getProps()
int	getTotalIteration()
WORKER_RESULT	getWorkerResult()
String	getWorkerResultClassName()
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	setLastMasterResult(MASTER_RESULT lastMasterResult)
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

WorkerContext

public WorkerContext(int totalIteration,
                     String appId,
                     Properties props,
                     String containerId,
                     List<GuaguaFileSplit> fileSplits,
                     String masterResultClassName,
                     String workerResultClassName)

方法详细信息

getCurrentIteration

public int getCurrentIteration()

setCurrentIteration

public void setCurrentIteration(int currentIteration)

getTotalIteration

public int getTotalIteration()

getLastMasterResult

public MASTER_RESULT getLastMasterResult()

setLastMasterResult

public void setLastMasterResult(MASTER_RESULT lastMasterResult)

getAppId

public String getAppId()

getContainerId

public String getContainerId()

getFileSplits

public List<GuaguaFileSplit> getFileSplits()

getProps

public Properties getProps()

getWorkerResult

public WORKER_RESULT getWorkerResult()

getWorkerResultClassName

public String getWorkerResultClassName()

getMasterResultClassName

public String getMasterResultClassName()

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