elek commented on issue #74: HDDS-2348.Remove log4j properties for package 
org.apache.hadoop.ozone
URL: https://github.com/apache/hadoop-ozone/pull/74#issuecomment-546878718
 
 
   Thanks to explain it @chimney-lee 
   
   This is the original logging configuration which is used to separate the 
ozone logging configuraiton from core hadoop/hdfs/yarn configuration when the 
ozone was part of the hdfs daemon.
   
   I agree with you that it can be removed. But I would remove all the 
following lines as well as they won't be used any more (and we can use the main 
console and RFA loggers):
   
   ```
   # Do not log into datanode logs. Remove this line to have single log.
   log4j.additivity.org.apache.hadoop.ozone=false
   
   # For development purposes, log both to console and log file.
   log4j.appender.OZONE=org.apache.log4j.ConsoleAppender
   log4j.appender.OZONE.Threshold=info
   log4j.appender.OZONE.layout=org.apache.log4j.PatternLayout
   log4j.appender.OZONE.layout.ConversionPattern=%d{ISO8601} [%t] %-5p \
    %X{component} %X{function} %X{resource} %X{user} %X{request} - %m%n
   
   # Real ozone logger that writes to ozone.log
   log4j.appender.FILE=org.apache.log4j.DailyRollingFileAppender
   log4j.appender.FILE.File=${hadoop.log.dir}/ozone.log
   log4j.appender.FILE.Threshold=debug
   log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
   log4j.appender.FILE.layout.ConversionPattern=%d{ISO8601} [%t] %-5p \
   (%F:%L) %X{function} %X{resource} %X{user} %X{request} - \
   %m%n
   ```
   
   Can you please remove all these lines as well?

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