org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair

Class NewAppWeightBooster

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.NewAppWeightBooster

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, WeightAdjuster

@InterfaceAudience.Private
 @InterfaceStability.Unstable
public class NewAppWeightBooster
extends org.apache.hadoop.conf.Configured
implements WeightAdjuster

A WeightAdjuster implementation that gives a weight boost to new jobs for a certain amount of time -- by default, a 3x weight boost for 60 seconds. This can be used to make shorter jobs finish faster, emulating Shortest Job First scheduling while not starving long jobs.

Constructor Summary

Constructors

Constructor and Description
NewAppWeightBooster()

Method Summary

Modifier and Type	Method and Description
double	adjustWeight(FSAppAttempt app, double curWeight)
void	setConf(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf

Methods inherited from class java.lang.Object

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

Constructor Detail

NewAppWeightBooster

public NewAppWeightBooster()

Method Detail

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

Overrides:

setConf in class org.apache.hadoop.conf.Configured

adjustWeight

public double adjustWeight(FSAppAttempt app,
                           double curWeight)

Specified by:

adjustWeight in interface WeightAdjuster