ml.shifu.guagua.worker
类 AbstractWorkerCoordinator<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>

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

直接已知子类：

AsyncWorkerCoordinator, NettyWorkerCoordinator, SyncWorkerCoordinator

public abstract class AbstractWorkerCoordinator<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>
extends BasicCoordinator<MASTER_RESULT,WORKER_RESULT>
implements WorkerInterceptor<MASTER_RESULT,WORKER_RESULT>

AbstractWorkerCoordinator has some common implementation for both async and sync worker coordinator.

Common functions include: znodes cleaning up, fail-over support and others.

嵌套类摘要

protected class

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

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

WAIT_SLOT_MILLS

构造方法摘要

AbstractWorkerCoordinator()

方法摘要

void	postApplication(WorkerContext<MASTER_RESULT,WORKER_RESULT> context) The hook point after any computation logic.
void	preIteration(WorkerContext<MASTER_RESULT,WORKER_RESULT> context) The hook point before computation of each iteration.
protected void	setMasterResult(WorkerContext<MASTER_RESULT,WORKER_RESULT> context, String appMasterNode, String appMasterSplitNode)

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, process, 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

从接口 ml.shifu.guagua.worker.WorkerInterceptor 继承的方法

postIteration, preApplication

构造方法详细信息

AbstractWorkerCoordinator

public AbstractWorkerCoordinator()

方法详细信息

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

参数：

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

postApplication

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

从接口 WorkerInterceptor 复制的描述

The hook point after any computation logic.

指定者：

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

参数：

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

setMasterResult

protected void setMasterResult(WorkerContext<MASTER_RESULT,WORKER_RESULT> context,
                               String appMasterNode,
                               String appMasterSplitNode)
                        throws org.apache.zookeeper.KeeperException,
                               InterruptedException

抛出：

org.apache.zookeeper.KeeperException

InterruptedException