[jbpm-dev] Task Service -- Too many open files

[Cracel, Rogerio]

I have been experiencing constant 'Too many open files' exceptions on the TaskClient during connect()

For every operation, I connect and disconnect as such…

TaskClient client = new TaskClient(new MinaTaskClientConnector("client 1", new MinaTaskClientHandler(SystemEventListenerFactory.getSystemEventListener())));

…. invoke operation on the task server (complete, release, claim, …)

client.disconnect();

The exception only manifests itself when attempting to connect to the task client, the remaining of the application (database connections, servlet requests, …) complete successfully.

Any insight on this would be very much appreciated.

Thank you.

----

java.io.IOException: Too many open files
        sun.nio.ch.IOUtil.initPipe(Native Method)
        sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:49)
        sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
        java.nio.channels.Selector.open(Selector.java:209)
        org.apache.mina.transport.socket.nio.NioProcessor.<init>(NioProcessor.java:56)
        sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        org.apache.mina.core.service.SimpleIoProcessorPool.<init>(SimpleIoProcessorPool.java:156)
        org.apache.mina.core.service.SimpleIoProcessorPool.<init>(SimpleIoProcessorPool.java:104)
        org.apache.mina.core.polling.AbstractPollingIoConnector.<init>(AbstractPollingIoConnector.java:93)
        org.apache.mina.transport.socket.nio.NioSocketConnector.<init>(NioSocketConnector.java:55)
        org.jbpm.task.service.mina.MinaTaskClientConnector.connect(MinaTaskClientConnector.java:60)
        org.jbpm.task.service.TaskClient.connect(TaskClient.java:745)
        gov.faa.aim.utils.TaskUtils.connect(TaskUtils.java:52)
        gov.faa.aim.utils.TaskUtils.getTasksForUser(TaskUtils.java:107)
        gov.faa.aim.web.controllers.TaskViewController.listTasks(TaskViewController.java:179)
        sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        java.lang.reflect.Method.invoke(Method.java:597)
        org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
        org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
        org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
        org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
        org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
        org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)
        org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:369)
        org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
        org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
        org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
        org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:168)
        org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
        org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)


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