lhotari commented on pull request #12941:
URL: https://github.com/apache/pulsar/pull/12941#issuecomment-1023927013


   @lordcheng10  How do you dynamically adjust the log level? Explaining that 
could help understanding what the problem is.
   some context why the root log level shouldn't be needlessly at debug: 
https://github.com/apache/pulsar/pull/8908 .
   > since the root log level was debug, all code blocks within
   log.isDebugEnabled() got executed.
   This caused a lot of unnecessary memory allocations and wasted CPU cycles.
   
   The dynamic configuration support should support also adjusting the root 
logging level.


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