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PIP-122: Change loadBalancer default loadSheddingStrategy to ThresholdShedder · Issue #13340 · apache/pulsar · GitHub

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PIP-122: Change loadBalancer default loadSheddingStrategy to ThresholdShedder #13340

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#13733
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PIP-122: Change loadBalancer default loadSheddingStrategy to ThresholdShedder#13340
#13733
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hangc0276
opened on Dec 15, 2021

Motivation

The ThresholdShedder load balance policy since Pulsar 2.6.0 by #6772. It can resolve many load balance issues of OverloadShedder and works well in many Pulsar production clusters.

In Pulsar 2.6.0, 2.7.0, 2.8.0 and 2.9.0, Pulsar's default load balance policy is OverloadShedder.

I think it's a good time for 2.10 to change default load balance policy to ThresholdShedder, it will make throughput more balance between brokers.

Proposed Changes

In 2.10 release，for broker.conf, change loadBalancerLoadSheddingStrategy from org.apache.pulsar.broker.loadbalance.impl.OverloadShedder to org.apache.pulsar.broker.loadbalance.impl.ThresholdShedder

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