terrytlu opened a new pull request, #20105:
URL: https://github.com/apache/kafka/pull/20105

   fix the issue mentioned https://issues.apache.org/jira/browse/KAFKA-19470, 
to avoid the jdk11 + lo4j2 performance issue.
   Optimize the trait Logging, introduce a static Map object to cache the same 
class loggers.
   
   
   The testing strategy is:
   Create two instances, their classes inherit from the trait Logging, these 
two class instances will have the same variable logger, that is, the 
StackWalker method will not be called twice
   
   


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