Bug 45932 - Log4j JMX MBeans not cleaned up
Summary: Log4j JMX MBeans not cleaned up
Status: NEW
Alias: None
Product: Log4j - Now in Jira
Classification: Unclassified
Component: Other (show other bugs)
Version: 1.2
Hardware: PC Windows XP
: P2 normal
Target Milestone: ---
Assignee: log4j-dev
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-10-01 13:43 UTC by Howard
Modified: 2008-10-01 13:43 UTC (History)
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Description Howard 2008-10-01 13:43:00 UTC 
LogManager.resetConfiguration() does not drop the JMX MBeans created by HierarchyDynamicMBean.

When executed twice, the following

	MBeanServer mbs = ...;
	Properties props = ...;
	HierarchyDynamicMBean hdm = new HierarchyDynamicMBean();
	mbs.registerMBean(hdm, new ObjectName("log4j:hiearchy=default"));

	Enumeration<Logger> iter = (Enumeration<Logger>) LogManager.getLoggerRepository().getCurrentLoggers();
	while (iter.hasMoreElements()) {
		hdm.addLoggerMBean(iter
			  .nextElement()
			  .getName());
	}

	LogManager.resetConfiguration();
	PropertyConfigurator.configure(props);

throws

	org.apache.log4j.jmx.LoggerDynamicMBean <ERROR  > Could not add appenderMBean for [F].
	javax.management.InstanceAlreadyExistsException: log4j:appender=F
		at com.sun.jmx.mbeanserver.RepositorySupport.addMBean(RepositorySupport.java:452)
		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1410)
		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:936)
		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:337)
		at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:497)
		at org.apache.log4j.jmx.LoggerDynamicMBean.registerAppenderMBean(Unknown Source)
		at org.apache.log4j.jmx.LoggerDynamicMBean.handleNotification(Unknown Source)
		at javax.management.NotificationBroadcasterSupport.handleNotification(NotificationBroadcasterSupport.java:221)
		at javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:184)
		at org.apache.log4j.jmx.HierarchyDynamicMBean.addAppenderEvent(Unknown Source)
		at org.apache.log4j.Hierarchy.fireAddAppenderEvent(Hierarchy.java:192)
		at org.apache.log4j.Category.addAppender(Category.java:162)
		at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:614)
		at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:509)
		at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:415)
		at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:349)
		...