Laurent Hasson created LOG4J2-2135:
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Summary: Logs are not flushed when using AsyncRoot
Key: LOG4J2-2135
URL: https://issues.apache.org/jira/browse/LOG4J2-2135
Project: Log4j 2
Issue Type: Bug
Components: Appenders
Affects Versions: 2.9.1
Environment: *+Libraries+*:
* java 1.8.151
* log4j-api-2.9.1.jar
* log4j-core-2.9.1.jar
* log4j-web-2.9.1.jar
* disruptor-3.3.6.jar
*+Configuration file+*:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="info">
<Appenders>
<Console name="Console" target="SYSTEM_OUT" >
<PatternLayout>
<pattern>%d{MMdd.HHmmss.SSS}#%-3t
%level{length=1} %15.15c{1}| %m%ex{20}%n</pattern>
</PatternLayout>
</Console>
</Appenders>
<Loggers>
<AsyncRoot level="debug">
<AppenderRef ref="Console" />
</AsyncRoot>
</Loggers>
</Configuration>
Reporter: Laurent Hasson
With the following code, by the time the program ends, a number of logs are
missing in the output. They may be either lost or not flushed?
public class Log4JTest
{
protected static final Logger Log =
LogManager.getLogger(Log4JTest.class.getName());
protected static final int MAX = 10;
public static void main(String[] args)
{
for (int i = 0; i < MAX; ++i)
{
for (int j = 0; j < MAX; ++j)
{
Log.fatal("Fatal i=" + i + "; j=" + j + ";");
Log.error("Error i=" + i + "; j=" + j + ";");
Log.warn("Warn i=" + i + "; j=" + j + ";");
Log.info("Info i=" + i + "; j=" + j + ";");
Log.debug("Debug i=" + i + "; j=" + j + ";");
Log.trace("Trace i=" + i + "; j=" + j + ";");
}
}
Log.info("DONE.");
}
}
I'd expect the program to end and all log messages to be output properly,
ending with the "DONE" message.
If i change the config file to a rolling appender, i can observe the same
behavior, i.e., missing messages.
<RollingFile name="FILES" fileName="${log-path}/aaa.log"
filePattern="${log-path}/aaa.%i.log.gz">
<PatternLayout>
<pattern>%d{MMdd.HHmmss.SSS}#%-3t %level{length=1} %15.15c{1}|
%m%ex{20}%n</pattern>
</PatternLayout>
<Policies>
<SizeBasedTriggeringPolicy size="100 MB" />
</Policies>
<DefaultRolloverStrategy max="99999"
compressionLevel="6"/>
</RollingFile>
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