kafka rebalancing problem

[大肉丸 <38...@qq.com.INVALID>]

Excuse me, I would like to ask you a question:

I have two topic，every topic only have 1 participation, theirs name are topic-A and topic B, and my broker set auto.create.topics.enable=false (its important!)




And now I start consumer-A listen topic-A, and start consumer-B listen topic-B, and this perform normal. （consumer-A and consumer-B belong to the same consumer group，lets say the name is group_test）


When i start a consumer-C to listen a Topic that doesn't exist, and consumer-C is also belong to the "group_test" consumer group,  it will always be rebalancing！！！


I don't know the reason, I thought one of them would not consume, but the result is that it has been rebalancing, could you please tell me the reason？

Re: kafka rebalancing problem

[ziming deng <de...@gmail.com>]

Thank you for reporting this, if you can stably reproduce it, you can create a JIRA ticket to track it. You are also welcomed if you can submit a PR to fix it.

- -
Best,
Ziming.

> On Apr 4, 2023, at 18:38, 大肉丸 <38...@qq.com.INVALID> wrote:
> 
> Excuse me, I would like to ask you a question:
> 
> I have two topic，every topic only have 1 participation, theirs name are topic-A and topic B, and my broker set auto.create.topics.enable=false (its important!)
> 
> 
> 
> 
> And now I start consumer-A listen topic-A, and start consumer-B listen topic-B, and this perform normal. （consumer-A and consumer-B belong to the same consumer group，lets say the name is group_test）
> 
> 
> When i start a consumer-C to listen a Topic that doesn't exist, and consumer-C is also belong to the "group_test" consumer group,  it will always be rebalancing！！！
> 
> 
> I don't know the reason, I thought one of them would not consume, but the result is that it has been rebalancing, could you please tell me the reason？