org.apache.hadoop.hbase.executor

类 ExecutorService

java.lang.Object

org.apache.hadoop.hbase.executor.ExecutorService

@InterfaceAudience.Private
public class ExecutorService
extends Object

This is a generic executor service. This component abstracts a threadpool, a queue to which EventTypes can be submitted, and a Runnable that handles the object that is added to the queue.

In order to create a new service, create an instance of this class and then do: instance.startExecutorService("myService");. When done call shutdown().

In order to use the service created above, call submit(EventHandler). Register pre- and post- processing listeners by registering your implementation of EventHandler.EventHandlerListener with registerListener(EventType, EventHandler.EventHandlerListener). Be sure to deregister your listener when done via unregisterListener(EventType).

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ExecutorService.ExecutorStatus A snapshot of the status of a particular executor.
static class	ExecutorService.RunningEventStatus The status of a particular event that is in the middle of being handled by an executor.

构造器概要

构造器

构造器和说明
ExecutorService(String servername) Default constructor.

方法概要

方法

限定符和类型	方法和说明
Map<String,ExecutorService.ExecutorStatus>	getAllExecutorStatuses()
ThreadPoolExecutor	getExecutorThreadPool(ExecutorType type)
void	registerListener(EventType type, EventHandler.EventHandlerListener listener) Subscribe to updates before and after processing instances of EventType.
void	shutdown()
void	startExecutorService(ExecutorType type, int maxThreads)
void	startExecutorService(String name, int maxThreads) Start an executor service with a given name.
void	submit(EventHandler eh)
EventHandler.EventHandlerListener	unregisterListener(EventType type) Stop receiving updates before and after processing instances of EventType

从类继承的方法 java.lang.Object

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

构造器详细资料

ExecutorService

public ExecutorService(String servername)

Default constructor.

参数:

servername - Name of the hosting server.

方法详细资料

startExecutorService

public void startExecutorService(String name,
                        int maxThreads)

Start an executor service with a given name. If there was a service already started with the same name, this throws a RuntimeException.

参数:

name - Name of the service to start.

shutdown

public void shutdown()

getExecutorThreadPool

public ThreadPoolExecutor getExecutorThreadPool(ExecutorType type)

startExecutorService

public void startExecutorService(ExecutorType type,
                        int maxThreads)

submit

public void submit(EventHandler eh)

registerListener

public void registerListener(EventType type,
                    EventHandler.EventHandlerListener listener)

Subscribe to updates before and after processing instances of EventType. Currently only one listener per event type.

参数:

type - Type of event we're registering listener for

listener - The listener to run.

unregisterListener

public EventHandler.EventHandlerListener unregisterListener(EventType type)

Stop receiving updates before and after processing instances of EventType

参数:

type - Type of event we're registering listener for

返回:

The listener we removed or null if we did not remove it.

getAllExecutorStatuses

public Map<String,ExecutorService.ExecutorStatus> getAllExecutorStatuses()