zeroflag commented on pull request #488:
URL: https://github.com/apache/knox/pull/488#issuecomment-919832184


   > * This looks like it completely removes slf4j - is that correct? would it 
make sense to have the slf4j->log4j2 bridge added for any dependency that might 
use slf4j for logging?
   
   @risdenk Thanks for going through this big patch. 
   
   At a few places in the Knox code we used `org.slf4j.LoggerFactory` and 
`org.slf4j.Logger` directly. I replaced these with Log4j2 and removed the slf4j 
dependency to make sure we won't use these again. 
   
   If there is a third party dependency that uses slf4j for logging, that still 
should work since we have `log4j-slf4j-impl-2.14.0.jar` on the class path.
   
   ```
   $ ls -al  dep/ | grep log4j
   -rw-r--r--    1 amagyar  staff   301418 Jan 22  2020 log4j-api-2.14.0.jar
   -rw-r--r--    1 amagyar  staff  1762731 Jan 22  2020 log4j-core-2.14.0.jar
   -rw-r--r--    1 amagyar  staff    23871 Jan 22  2020 
log4j-slf4j-impl-2.14.0.jar
   ```


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