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via Apache's JIRA Issue Tracker by Michael Han, 2 years ago
javax.management.InstanceAlreadyExistsException: log4j:logger=root at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) at org.apache.log4j.jmx.AbstractDynamicMBean.registerMBean(AbstractDynamicMBean.java:160) at org.apache.log4j.jmx.HierarchyDynamicMBean.addLoggerMBean(HierarchyDynamicMBean.java:125) at org.apache.log4j.jmx.HierarchyDynamicMBean.postRegister(HierarchyDynamicMBean.java:263) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.postRegister(DefaultMBeanServerInterceptor.java:1024) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:974) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) at org.apache.zookeeper.jmx.ManagedUtil.registerLog4jMBeans(ManagedUtil.java:75) at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:131) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:120) at org.apache.zookeeper.server.quorum.QuorumPeerTestBase$MainThread.run(QuorumPeerTestBase.java:245) at java.lang.Thread.run(Thread.java:745)