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()
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()

toString

public String toString()

覆盖：

类 Object 中的 toString