Please change 
log4j.logger.kafka=DEBUG, kafkaAppender

And it will work.

Jacek

> On Apr 10, 2020, at 07:51, deadwind4 <deadwi...@outlook.com> wrote:
> 
> Hi 
> 
> 
> I wanna change kafka log to DEBUG level
> 
> 
> I change option log4j.rootLogger=DEBUG, stdout, kafkaAppender in 
> log4j.properties file
> 
> 
> but in logs/server.log I still see logs without any DEBUG message. why?
> 
> 
> Thank you.

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