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

java.lang.Object
  ml.shifu.guagua.BasicCoordinator<MASTER_RESULT,WORKER_RESULT>
      ml.shifu.guagua.worker.AbstractWorkerCoordinator<MASTER_RESULT,WORKER_RESULT>
          ml.shifu.guagua.worker.AsyncWorkerCoordinator<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.

所有已实现的接口：

WorkerInterceptor<MASTER_RESULT,WORKER_RESULT>, org.apache.zookeeper.Watcher

public class AsyncWorkerCoordinator<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>
extends AbstractWorkerCoordinator<MASTER_RESULT,WORKER_RESULT>

AsyncWorkerCoordinator is used to as a worker barrier for each iteration.

For each iteration, AsyncWorkerCoordinator will wait until master's signal.

To start a new iteration, SyncMasterCoordinator will write a znode for each iteration like '/_guagua/job_201312041304_189025/master/{currentIteration}' with with MasterComputable result as its data. AsyncWorkerCoordinator is trying to detect whether it exists, if yes, to start a new iteration.

Worker result will be written into each worker iteration znode for master to get.

嵌套类摘要

从类 ml.shifu.guagua.worker.AbstractWorkerCoordinator 继承的嵌套类/接口

AbstractWorkerCoordinator.FailOverCoordinatorCommand

从类 ml.shifu.guagua.BasicCoordinator 继承的嵌套类/接口

BasicCoordinator.BasicCoordinatorCommand, BasicCoordinator.CoordinatorCommand, BasicCoordinator.RetryCoordinatorCommand

从接口 org.apache.zookeeper.Watcher 继承的嵌套类/接口

org.apache.zookeeper.Watcher.Event

字段摘要

protected ProgressLock	masterInitLock Lock is used to check register info from master.
protected ProgressLock	masterIterationLock Lock is used to check iteration info from master.

从类 ml.shifu.guagua.BasicCoordinator 继承的字段

WAIT_SLOT_MILLS

构造方法摘要

AsyncWorkerCoordinator()

方法摘要

String	getAppId()
int	getCurrentIteration()
void	postIteration(WorkerContext<MASTER_RESULT,WORKER_RESULT> context) The hook point after computation of each iteration.
void	preApplication(WorkerContext<MASTER_RESULT,WORKER_RESULT> context) The hook point before any computation logic.
void	preIteration(WorkerContext<MASTER_RESULT,WORKER_RESULT> context) The hook point before computation of each iteration.
void	process(org.apache.zookeeper.WatchedEvent event)
void	setAppId(String appId)
void	setCurrentIteration(int currentIteration)

从类 ml.shifu.guagua.worker.AbstractWorkerCoordinator 继承的方法

postApplication, setMasterResult

从类 ml.shifu.guagua.BasicCoordinator 继承的方法

checkAndSetZooKeeper, closeZooKeeper, getAppNode, getBaseMasterElectionNode, getBytesFromZNode, getCurrentMasterNode, getCurrentMasterSplitNode, getCurrentWorkerNode, getCurrentWorkerSplitNode, getLastMasterNode, getLastWorkerNode, getMasterBaseNode, getMasterElectionNode, getMasterNode, getMasterSerializer, getRootNode, getSleepTime, getWorkerBaseNode, getWorkerBaseNode, getWorkerNode, getWorkerSerializer, getZkConnLatch, getZooKeeper, initialize, isFixedTime, setBytesToZNode, setFixedTime, setMasterSerializer, setSleepTime, setWorkerSerializer, setZooKeeper, startHeartbeat, stopHeartBeat

从类 java.lang.Object 继承的方法

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

字段详细信息

masterInitLock

protected ProgressLock masterInitLock

Lock is used to check register info from master.

masterIterationLock

protected ProgressLock masterIterationLock

Lock is used to check iteration info from master.

构造方法详细信息

AsyncWorkerCoordinator

public AsyncWorkerCoordinator()

方法详细信息

process

public void process(org.apache.zookeeper.WatchedEvent event)

指定者：

接口 org.apache.zookeeper.Watcher 中的 process

覆盖：

类 BasicCoordinator<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable> 中的 process

getCurrentIteration

public int getCurrentIteration()

setCurrentIteration

public void setCurrentIteration(int currentIteration)

getAppId

public String getAppId()

setAppId

public void setAppId(String appId)

preApplication

public void preApplication(WorkerContext<MASTER_RESULT,WORKER_RESULT> context)

从接口 WorkerInterceptor 复制的描述

The hook point before any computation logic.

参数：

context - the worker context instance which includes master result and other useful parameters.

preIteration

public void preIteration(WorkerContext<MASTER_RESULT,WORKER_RESULT> context)

从接口 WorkerInterceptor 复制的描述

The hook point before computation of each iteration.

指定者：

接口 WorkerInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable> 中的 preIteration

覆盖：

类 AbstractWorkerCoordinator<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable> 中的 preIteration

参数：

context - the worker context instance which includes master result and other useful parameters.

postIteration

public void postIteration(WorkerContext<MASTER_RESULT,WORKER_RESULT> context)

从接口 WorkerInterceptor 复制的描述

The hook point after computation of each iteration.

参数：

context - the worker context instance which includes master result and other useful parameters.