High CPU due to RMI TCP Connection thread infinite loop on HashMap
Issue
- JBoss is consuming high CPU and it appears to be from many RMI TCP Connection threads looping on org.jboss.resource.adapter.jdbc.remote.WrapperDataSourceService's 'connectionMap' HashMap:
"RMI TCP Connection(14353)-119.43.98.45" daemon prio=6 tid=0x4e283c00 nid=0x22a4 runnable [0x54c4f000] java.lang.Thread.State: RUNNABLE at java.util.HashMap.put(HashMap.java:374) at org.jboss.resource.adapter.jdbc.remote.WrapperDataSourceService.createConnectionProxy(WrapperDataSourceService.java:499) at org.jboss.resource.adapter.jdbc.remote.WrapperDataSourceService.doDataSourceMethod(WrapperDataSourceService.java:347) at org.jboss.resource.adapter.jdbc.remote.WrapperDataSourceService.invoke(WrapperDataSourceService.java:201) at sun.reflect.GeneratedMethodAccessor134.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:818) at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:419) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305) at sun.rmi.transport.Transport$1.run(Transport.java:159) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:155) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619)
Environment
- JBoss Enterprise Application Platform (EAP)
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