Aaron Daniels created LOG4J2-177:
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Summary: ERROR StatusLogger An exception occurred processing
Appender udpsocket java.lang.NullPointerException
Key: LOG4J2-177
URL: https://issues.apache.org/jira/browse/LOG4J2-177
Project: Log4j 2
Issue Type: Bug
Components: Appenders
Affects Versions: 2.0-beta4
Reporter: Aaron Daniels
This seems to be a race condition of some kind. Two threads are exiting at
almost exactly the same time, and both print a message as they exit. This
exception happens every 3 or 4 times the code is run, so it's easily
reproducible.
ERROR StatusLogger An exception occurred processing Appender udpsocket
java.lang.NullPointerException
at
org.apache.logging.log4j.core.net.DatagramOutputStream.flush(DatagramOutputStream.java:93)
at
org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:146)
at
org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:117)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:102)
at
org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:335)
at
org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:316)
at
org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:281)
at org.apache.logging.log4j.core.Logger.log(Logger.java:108)
at
org.apache.logging.log4j.spi.AbstractLogger.trace(AbstractLogger.java:250)
at
com.galmont.automation.framework.gui.handlers.RunCycleHandler$2.run(RunCycleHandler.java:128)
at java.lang.Thread.run(Unknown Source)
My configuration file:
<?xml version="1.0" encoding="UTF-8"?>
<configuration status="OFF">
<appenders>
<Console name="console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level
%logger{36} - %msg%n" />
</Console>
<Socket name="udpsocket" host="localhost" port="90"
protocol="UDP">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level
%logger{36} - %msg%n" />
</Socket>
<RollingFile name="RollingFile" fileName="logs/app.log"
filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level
%logger{36} - %msg%n" />
<Policies>
<SizeBasedTriggeringPolicy size="20 MB" />
</Policies>
</RollingFile>
</appenders>
<loggers>
<root level="trace">
<appender-ref ref="console" />
<appender-ref ref="udpsocket" />
<appender-ref ref="RollingFile" />
</root>
</loggers>
</configuration>
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