Remko Popma created LOG4J2-219:
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Summary: Named logger without root logger ends up with empty
Appenders map - does not log anything
Key: LOG4J2-219
URL: https://issues.apache.org/jira/browse/LOG4J2-219
Project: Log4j 2
Issue Type: Bug
Components: Core
Affects Versions: 2.0-beta5
Reporter: Remko Popma
On the log4j-user mailing list, Peter DePasquale gave this test case that
demonstrates the problem:
Note that the configuration has no root logger, but only contains a named
logger.
In a debugger I found that the LoggerConfig for "logtest.LogTest" ended up with
an empty "appenders" Map<String, AppenderControl<?>>. The appenderRefs list did
contain an AppenderRef object but in #callAppenders there are no
AppenderControl objects to call...
(Sorry, I have been unable to find out the underlying cause yet.)
<?xml version="1.0" encoding="UTF-8"?>
<configuration status="warn">
<appenders>
<File name="tracelog" fileName="trace-log.txt"
immediateFlush="true" append="false">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level
%logger{36} - %msg%n"/>
</File>
</appenders>
<loggers>
<logger name="logtest.LogTest" level="trace">
<appender-ref ref="tracelog"/>
</logger>
</loggers>
</configuration>
package logtest;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.config.XMLConfigurationFactory;
public class LogTest {
public static void main(String[] args) {
System.setProperty(XMLConfigurationFactory.CONFIGURATION_FILE_PROPERTY,
"log4j2-roottest.xml");
Logger logger = LogManager.getLogger(LogTest.class);
logger.trace("This is a trace message");
logger.info("This is an info message");
logger.warn("This is a warning message");
}
}
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