org.apache.hadoop.yarn.util
Class AbstractLivelinessMonitor<O>

java.lang.Object
  org.apache.hadoop.yarn.service.AbstractService
      org.apache.hadoop.yarn.util.AbstractLivelinessMonitor<O>

All Implemented Interfaces:

Service

public abstract class AbstractLivelinessMonitor<O>
extends AbstractService

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.yarn.service.Service

Service.STATE

Field Summary

static int

DEFAULT_EXPIRE

Constructor Summary

AbstractLivelinessMonitor(String name, Clock clock)

Method Summary

protected abstract void	expire(O ob)
void	receivedPing(O ob)
void	register(O ob)
protected void	setExpireInterval(int expireInterval)
protected void	setMonitorInterval(int monitorInterval)
void	start() Start the service.
void	stop() Stop the service.
void	unregister(O ob)

Methods inherited from class org.apache.hadoop.yarn.service.AbstractService

getConfig, getName, getServiceState, getStartTime, init, register, unregister

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_EXPIRE

public static final int DEFAULT_EXPIRE

See Also:

Constant Field Values

Constructor Detail

AbstractLivelinessMonitor

public AbstractLivelinessMonitor(String name,
                                 Clock clock)

Method Detail

start

public void start()

Description copied from class: AbstractService

Start the service. The transition should be from Service.STATE.INITED to Service.STATE.STARTED unless the operation failed and an exception was raised.

Specified by:

start in interface Service

Overrides:

start in class AbstractService

stop

public void stop()

Description copied from class: AbstractService

Stop the service. This operation must be designed to complete regardless of the initial state of the service, including the state of all its internal fields.

Specified by:

stop in interface Service

Overrides:

stop in class AbstractService

expire

protected abstract void expire(O ob)

setExpireInterval

protected void setExpireInterval(int expireInterval)

setMonitorInterval

protected void setMonitorInterval(int monitorInterval)

receivedPing

public void receivedPing(O ob)

register

public void register(O ob)

unregister

public void unregister(O ob)