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Editorial Team
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Asked: 2026-05-28T16:47:03+00:00

Here is my log4j.properties file # Set loggers’ levels log4j.rootLogger=warn, trace_file # Appender log4j.appender.trace_file=org.apache.log4j.RollingFileAppender

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Here is my log4j.properties file

# Set loggers' levels
log4j.rootLogger=warn, trace_file

# Appender
log4j.appender.trace_file=org.apache.log4j.RollingFileAppender
log4j.appender.trace_file.Append=true
log4j.appender.trace_file.File=log/myLog.log
log4j.appender.trace_file.MaxFileSize=10MB
log4j.appender.trace_file.MaxBackupIndex=50

# PatternLayout
log4j.appender.trace_file.layout=org.apache.log4j.PatternLayout
log4j.appender.trace_file.layout.ConversionPattern=%d [%p] (%F:%L) %m%n

# Classes
log4j.logger.my_package=info, trace_file

What I want :

  • Store log requests from my.package in trace_file with at least INFO level
  • Store log requests from all other loggers in trace_file ONLY if it’s at least WARN level

My configuration does’nt work. If my.package raises a log request of level WARN, this log request gets written two times. If I use two separate appenders, there is no problem.

What am I missing ?

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1 Answer

  1. Editorial Team

    Try removing the “trace_file” directive from the my_package logger statement.

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