Package org.apache.hadoop.metrics2

Class MetricsSystem.AbstractCallback

java.lang.Object

org.apache.hadoop.metrics2.MetricsSystem.AbstractCallback

All Implemented Interfaces:

MetricsSystem.Callback

Enclosing class:

MetricsSystem

public abstract static class MetricsSystem.AbstractCallback
extends java.lang.Object
implements MetricsSystem.Callback

Convenient abstract class for implementing callback interface

Constructor Summary

Constructors

Constructor	Description
AbstractCallback()

Method Summary

Modifier and Type	Method	Description
void	postStart()	Called after start()
void	postStop()	Called after stop()
void	preStart()	Called before start()
void	preStop()	Called before stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCallback

public AbstractCallback()

Method Detail

preStart

public void preStart()

Description copied from interface: MetricsSystem.Callback

Called before start()

Specified by:

preStart in interface MetricsSystem.Callback

postStart

public void postStart()

Description copied from interface: MetricsSystem.Callback

Called after start()

Specified by:

postStart in interface MetricsSystem.Callback

preStop

public void preStop()

Description copied from interface: MetricsSystem.Callback

Called before stop()

Specified by:

preStop in interface MetricsSystem.Callback

postStop

public void postStop()

Description copied from interface: MetricsSystem.Callback

Called after stop()

Specified by:

postStop in interface MetricsSystem.Callback