Hi – thanks to Bruno Cadonna for this reply (which I seem to have lost in my email system sorry!) but copying from archive here for reference:
classic is NOT the pre-2.4 protocol but the pre-KIP-848 protocol. If you use classic and a cooperative assignor like CooperativeStickyAssignor you use KIP-429. Also in 4.0. But not sure about this response, which I unfortunately can’t read as I’m linguistically challenged (Australian English only sorry)! Can anyone shed any light? Paul From: 咑慥沬唻 <309001...@qq.com.INVALID> Date: Friday, 4 July 2025 at 6:23 pm To: users <users@kafka.apache.org>, Kafka Users <users@kafka.apache.org>, dev <d...@kafka.apache.org> Subject: 回复：KIP-429 vs. KIP 848? [You don't often get email from 309001...@qq.com.invalid. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] EXTERNAL EMAIL - USE CAUTION when clicking links or attachments 我在那里设置，不接受这样的邮件 咑慥沬唻 309001...@qq.com ------------------ 原始邮件 ------------------ 发件人: "Brebner, Paul"<paul.breb...@netapp.com.INVALID>; 发送时间: 2025年6月17日(星期二) 上午10:31 收件人: "users"<users@kafka.apache.org>; "dev"<d...@kafka.apache.org>; 主题: KIP-429 vs. KIP 848? 我对从KIP-429的转换感到困惑。https://urldefense.com/v3/__https://cwiki.apache.org/confluence/display/KAFKA/KIP-429*3A*Kafka*Consumer*Incremental*Rebalance*Protocol**BKIP-848https:/*cwiki.apache.org/confluence/display/KAFKA/KIP-848*3A*The*Next*Generation*of*the*Consumer*Rebalance*Protocol__;JSsrKysr6IezLyUrKysrKysrKw!!Nhn8V6BzJA!Uy3YU6pIw3Hz6POT-k3uFathtFZAC0CxSpKLoQQ-GLn577VlnaUdvwXs64_vyYYerXFkWKNkyOLKajB93-9ksLPMSLACtQ$ 429出现在卡夫卡4.0中，848出现在3.7中（第一次提到group.protocol消费者配置为经典或消费者——名字有点混乱——我假设经典是2.4前的再平衡协议，而消费者是新的协议，实际上由代理管理。?9?5 ) 但是4.0中你还能用429吗？怎么？我想在4.0中的两个增量再平衡KIP之间做一些性能测试。 致以问候，保罗
