Hi Chao,

I suppose, you would like to know:
within a consumer group which message is coming from which partition, since 
partitions corresponds to broker and broker = ip, right?

Well, if you really want to know this, then you have to get the context. E.g 
within a processor there is a method called context()....

However, keep in mind broker and IP addresses could change. I would not 
recommend to build a business logic on top of ip addresses.
 
Within a producer, you can manage the destination partition / broker. 

Regards
Valentin 

--

> Am 10.12.2019 um 04:48 schrieb 朱超 <chao....@baozun.com>:
> 
> hi:
>    I am a gteen hand of kafka,after installation of new kafka cluster,it 
> raises a  question that how do I know which IP address  a message   come 
> from? Is there any special set about this?
> Eagerly awaiting your reply.
> 
> ________________________________
> chao....@baozun.com

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