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https://issues.apache.org/jira/browse/LOG4J2-3295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ralph Goers resolved LOG4J2-3295.
---------------------------------
Resolution: Won't Fix
> Reconfiguration failure with an error
> -------------------------------------
>
> Key: LOG4J2-3295
> URL: https://issues.apache.org/jira/browse/LOG4J2-3295
> Project: Log4j 2
> Issue Type: Bug
> Components: Configuration, Configurators
> Affects Versions: 2.17.0
> Reporter: Mike Li
> Priority: Blocker
>
> Steps to recreate:
> # start with log4j2.xml with following content:
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration status="DEBUG" monitorInterval="30">
>
> <Appenders>
> <File name="FILE" fileName="c:\temp\product.log">
> <PatternLayout>
> <Pattern>ProductName:%-10p %d\{yyyy-MM-dd HH:mm:ss.SSS}
> {GMT} context:%x [%t] - %-50m - %M(%F:%L)%n</Pattern>
> </PatternLayout>
>
> </File>
> </Appenders>
> <Loggers>
> <Root level="INFO">
> <AppenderRef ref="FILE"/>
> </Root>
> </Loggers>
> </Configuration>
>
> 2. After the application is started and running, edit the log4j2.xml file
> with the following content, notice that the fileName in the WRAP appender is
> the same as that in the original FILE appender.
>
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration status="DEBUG" monitorInterval="30" >
> <Appenders>
> <Async name="ASYNC" includeLocation="true" bufferSize="4096">
> <AppenderRef ref="WRAP"/>
> </Async>
> <RollingFile name="WRAP" fileName="c:\temp\product.log"
> filePattern="c:\temp\product.log.%i">
> <PatternLayout pattern="ProductName:%-7p %d\{yyyy-MM-dd
> HH:mm:ss.SSS}{GMT}
> context:%x [%t] - %-50m - %M(%F:%L)%n"/>
> <Policies>
> <SizeBasedTriggeringPolicy size="1048576"/>
> </Policies>
> <DefaultRolloverStrategy max="4"/>
> </RollingFile>
> </Appenders>
> <Loggers>
> <Root level="DEBUG">
> <AppenderRef ref="ASYNC"/>
> </Root>
> </Loggers>
> </Configuration>
>
> 3. Wait for the log4j to detect the change in 30 seconds to reconfigure. When
> the reconfigure starts, it reports an error. Here is the exception stack:
>
> 2021-12-28 17:42:41,688 Log4j2-TF-1-ConfiguratonFileWatcher-4 ERROR Could not
> create plugin of type class
> org.apache.logging.log4j.core.appender.RollingFileAppender for element
> RollingFile org.apache.logging.log4j.core.config.ConfigurationException:
> Configuration has multiple incompatible Appenders pointing to the same
> resource 'c:\temp\product.log'
> at
> org.apache.logging.log4j.core.appender.AbstractManager.narrow(AbstractManager.java:169)
> at
> org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:217)
> at
> org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:146)
> at
> org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:62)
> at
> org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1107)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1032)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1024)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:643)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:243)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:289)
> at
> org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:626)
> at
> org.apache.logging.log4j.core.LoggerContext.onChange(LoggerContext.java:762)
> at
> org.apache.logging.log4j.core.util.AbstractWatcher$ReconfigurationRunnable.run(AbstractWatcher.java:93)
> at java.base/java.lang.Thread.run(Thread.java:831)
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