Package org.apache.pulsar.broker.loadbalance.impl

Class AvgShedder

java.lang.Object

org.apache.pulsar.broker.loadbalance.impl.AvgShedder

All Implemented Interfaces:

LoadSheddingStrategy, ModularLoadManagerStrategy

public class AvgShedder
extends Object
implements LoadSheddingStrategy, ModularLoadManagerStrategy

Constructor Summary

Constructors

Constructor	Description
AvgShedder()

Method Summary

Modifier and Type	Method	Description
com.google.common.collect.Multimap<String,String>	findBundlesForUnloading(LoadData loadData, ServiceConfiguration conf)	Recommend that all of the returned bundles be unloaded.
void	onActiveBrokersChange(Set<String> activeBrokers)	Triggered when active broker changes.
Optional<String>	selectBroker(Set<String> candidates, org.apache.pulsar.policies.data.loadbalancer.BundleData bundleToAssign, LoadData loadData, ServiceConfiguration conf)	Find a suitable broker to assign the given bundle to.

Methods inherited from class java.lang.Object

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

Constructor Details

AvgShedder

public AvgShedder()

Method Details

findBundlesForUnloading

public com.google.common.collect.Multimap<String,String> findBundlesForUnloading(LoadData loadData,
 ServiceConfiguration conf)

Description copied from interface: LoadSheddingStrategy

Recommend that all of the returned bundles be unloaded.

Specified by:

findBundlesForUnloading in interface LoadSheddingStrategy

Parameters:

loadData - The load data to used to make the unloading decision.

conf - The service configuration.

Returns:

A map from all selected bundles to the brokers on which they reside.

onActiveBrokersChange

public void onActiveBrokersChange(Set<String> activeBrokers)

Description copied from interface: LoadSheddingStrategy

Triggered when active broker changes.

Specified by:

onActiveBrokersChange in interface LoadSheddingStrategy

Specified by:

onActiveBrokersChange in interface ModularLoadManagerStrategy

Parameters:

activeBrokers - active Brokers

selectBroker

public Optional<String> selectBroker(Set<String> candidates,
 org.apache.pulsar.policies.data.loadbalancer.BundleData bundleToAssign,
 LoadData loadData,
 ServiceConfiguration conf)

Description copied from interface: ModularLoadManagerStrategy

Find a suitable broker to assign the given bundle to.

Specified by:

selectBroker in interface ModularLoadManagerStrategy

Parameters:

candidates - The candidates for which the bundle may be assigned.

bundleToAssign - The data for the bundle to assign.

loadData - The load data from the leader broker.

conf - The service configuration.

Returns:

The name of the selected broker as it appears on ZooKeeper.