Package org.apache.heron.api.utils

Class DefaultMaxSpoutPendingTuner

java.lang.Object

org.apache.heron.api.utils.DefaultMaxSpoutPendingTuner

public class DefaultMaxSpoutPendingTuner
extends Object

This is a class that helps to auto tune the max spout pending value

Constructor Summary

Constructors

Constructor	Description
DefaultMaxSpoutPendingTuner(float autoTuneFactor, double progressBound)	Conv constructor when initing from a non-set initial value
DefaultMaxSpoutPendingTuner(Long maxSpoutPending, float autoTuneFactor, double progressBound)

Method Summary

Modifier and Type	Method	Description
void	autoTune(Long progress)	Tune max default max spout pending based on progress
Long	get()
static boolean	lessThanNum(Long val, Long prevVal, double bound)
static boolean	moreThanNum(Long val, Long prevVal, double bound)
static boolean	similarToNum(Long val, Long prevVal, double bound)

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultMaxSpoutPendingTuner

public DefaultMaxSpoutPendingTuner(float autoTuneFactor,
                                   double progressBound)

Conv constructor when initing from a non-set initial value

DefaultMaxSpoutPendingTuner

public DefaultMaxSpoutPendingTuner(Long maxSpoutPending,
                                   float autoTuneFactor,
                                   double progressBound)

Method Detail

similarToNum

public static boolean similarToNum(Long val,
                                   Long prevVal,
                                   double bound)

moreThanNum

public static boolean moreThanNum(Long val,
                                  Long prevVal,
                                  double bound)

lessThanNum

public static boolean lessThanNum(Long val,
                                  Long prevVal,
                                  double bound)

get

public Long get()

autoTune

public void autoTune(Long progress)

Tune max default max spout pending based on progress