Package org.apache.hadoop.yarn.metrics

Interface DispatcherEventMetrics

All Superinterfaces:

org.apache.hadoop.metrics2.MetricsSource

All Known Implementing Classes:

DispatcherEventMetricsImpl, DispatcherEventMetricsNoOps

public interface DispatcherEventMetrics
extends org.apache.hadoop.metrics2.MetricsSource

Interface for Dispatcher can be used to publish Event related metrics

Method Summary

Modifier and Type	Method	Description
void	addEvent(java.lang.Object type)	Call if Event added for dispatching
void	init(java.lang.Class<? extends java.lang.Enum> typeClass)	Class of the event type what can be handled by the DispatcherEventMetrics
void	removeEvent(java.lang.Object type)	Call if Event handled
void	updateRate(java.lang.Object type, long millisecond)	Call with how much time was required to handle the event

Methods inherited from interface org.apache.hadoop.metrics2.MetricsSource

getMetrics

Method Detail

init

void init(java.lang.Class<? extends java.lang.Enum> typeClass)

Class of the event type what can be handled by the DispatcherEventMetrics

Parameters:

typeClass - the event type

addEvent

void addEvent(java.lang.Object type)

Call if Event added for dispatching

Parameters:

type - type of the event

removeEvent

void removeEvent(java.lang.Object type)

Call if Event handled

Parameters:

type - type of the event

updateRate

void updateRate(java.lang.Object type,
                long millisecond)

Call with how much time was required to handle the event

Parameters:

type - type of the event

millisecond - time interval