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Posted to log4j-dev@logging.apache.org by "Aaron Daniels (JIRA)" <ji...@apache.org> on 2013/03/26 21:55:15 UTC
[jira] [Closed] (LOG4J2-177) ERROR StatusLogger An exception
occurred processing Appender udpsocket java.lang.NullPointerException
[ https://issues.apache.org/jira/browse/LOG4J2-177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aaron Daniels closed LOG4J2-177.
--------------------------------
I can no longer reproduce this error in the latest code. Looks like it's fixed. Thanks!
> 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
> Assignee: Ralph Goers
> Fix For: 2.0-beta5
>
>
> 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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