Log4j logs debug into info...

[Ivan Jouikov]

Hey!

My log4j is set up as the following:

# All the .File parameters will be relative to the application's /WEB-INF/log/
# directory.
# Global logger will be the "general" logger
log4j.rootLogger=INFO, A2
 
# This is logger for any general information we want to log
log4j.appender.A2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A2.MaxFileSize=2MB
log4j.appender.A2.DatePattern='.'yyyy-MM-dd 
log4j.appender.A2.File=log.txt
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.ConversionPattern=%d [%t] %-5p %c - %m%n
 
# This is where all the debug information will go to
log4j.logger.debugger=DEBUG, A1
log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A1.MaxFileSize=2MB
log4j.appender.A1.DatePattern='.'yyyy-MM-dd 
log4j.appender.A1.File=debug.txt
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%5p (%F:%L) - %m%n
  

As you can see, there are 2 loggers: root(INFO) and debugger(DEBUG)

Whenever I use the following:

Logger.getLogger("debugger").debug("YO YO DEBUG");

, "YO YO DEBUG" gets logged into both the root logger's appender, and debugger's appender. How can this be, if I am calling debug on debugger, which is lower down the hirearchy, how can it give that message to the root logger in the first place? And even if it does give it to it - how come root logger logs it, if it's set to log on INFO?

Thanks in advance.

[Ivan Jouikov]

Part of my question was answered by the doc:

"The output of a log statement of logger C will go to all the appenders in C and its ancestors"

So, ok I can change additivity and prevent it from going to the root. But still, why does root log DEBUG?