Package org.apache.pulsar.broker.loadbalance.extensions.strategy

Class LeastResourceUsageWithWeight

java.lang.Object

org.apache.pulsar.broker.loadbalance.extensions.strategy.LeastResourceUsageWithWeight

All Implemented Interfaces:

BrokerSelectionStrategy

@ThreadSafe
public class LeastResourceUsageWithWeight
extends Object
implements BrokerSelectionStrategy

Placement strategy which selects a broker based on which one has the least resource usage with weight. This strategy takes into account the historical load percentage and short-term load percentage, and thus will not cause cluster fluctuations due to short-term load jitter.

Constructor Summary

Constructors

Constructor	Description
LeastResourceUsageWithWeight()

Method Summary

Modifier and Type	Method	Description
Optional<String>	select(Set<String> candidates, org.apache.pulsar.common.naming.ServiceUnitId bundleToAssign, LoadManagerContext context)	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

LeastResourceUsageWithWeight

public LeastResourceUsageWithWeight()

Method Details

select

public Optional<String> select(Set<String> candidates,
 org.apache.pulsar.common.naming.ServiceUnitId bundleToAssign,
 LoadManagerContext context)

Find a suitable broker to assign the given bundle to.

Specified by:

select in interface BrokerSelectionStrategy

Parameters:

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

bundleToAssign - The data for the bundle to assign.

context - The load manager context.

Returns:

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