Sridevi Narra created LOG4J2-1529:
-------------------------------------

             Summary: composite configurations do not merge attributes on 
logger nodes
                 Key: LOG4J2-1529
                 URL: https://issues.apache.org/jira/browse/LOG4J2-1529
             Project: Log4j 2
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.6.2
            Reporter: Sridevi Narra


According to Log4j2 Composite configuration documentation 
(https://logging.apache.org/log4j/2.x/manual/configuration.html#CompositeConfiguration)
 as given below, logger attributes should be merged.
"Loggers are all aggregated. Logger attributes are individually merged with 
duplicates being replaced by those in later configurations. ..."

However, if I have a 2 files that are composed with different Root Logger 
levels as given below, only the root level is used. I am not able to override 
the root logger level in the second file.

file1.xml:
<Configuration status="WARN">
  <Appenders>
    <Console name="Console" target="SYSTEM_OUT">
      <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
    </Console>
  </Appenders>
  <Loggers>
        <Root level="warn">
            <AppenderRef ref="Console" />
        </Root>
    </Loggers>
</Configuration>

file2.xml:
<Configuration>
  <Loggers>
        <Root level="info">
            <AppenderRef ref="Console" />
        </Root>
    </Loggers>
</Configuration>

Command line arg:
-Dlog4j.configurationFile=file1.xml,file2.xml

Actual: The resulting log level is "warn"
Expected: log level to be "info"



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