org.apache.hadoop.metrics2

Interface MetricsSystem.Callback

All Known Implementing Classes:

MetricsSystem.AbstractCallback

Enclosing class:

MetricsSystem

public static interface MetricsSystem.Callback

The metrics system callback interface (needed for proxies.)

Method Summary

Methods

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

Method Detail

preStart

void preStart()

Called before start()

postStart

void postStart()

Called after start()

preStop

void preStop()

Called before stop()

postStop

void postStop()

Called after stop()