The initial discovery of a connector Jopr works fine. After running a few minutes discovery fails and the following exception is logged:

12:46:12,754 WARN [InventoryManager] Failure during discovery for [Connectors] Resources - failed after 300032 ms.
org.rhq.core.pc.inventory.TimeoutException: Call to [org.modeshape.rhq.plugin.ConnectorDiscoveryComponent.discoverResources()] with args [[org.rhq.core.pluginapi.inventory.ResourceDiscoveryContext@de30c3]] timed out. Invocation thread will be interrupted
at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ResourceDiscoveryComponentInvocationHandler.invokeInNewThread(DiscoveryComponentProxyFactory.java:208)
at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ResourceDiscoveryComponentInvocationHandler.invoke(DiscoveryComponentProxyFactory.java:181)
at $Proxy370.discoverResources(Unknown Source)
at org.rhq.core.pc.inventory.InventoryManager.invokeDiscoveryComponent(InventoryManager.java:272)
at org.rhq.core.pc.inventory.InventoryManager.executeComponentDiscovery(InventoryManager.java:1697)
at org.rhq.core.pc.inventory.RuntimeDiscoveryExecutor.discoverForResource(RuntimeDiscoveryExecutor.java:218)
at org.rhq.core.pc.inventory.RuntimeDiscoveryExecutor.discoverForResource(RuntimeDiscoveryExecutor.java:234)
at org.rhq.core.pc.inventory.RuntimeDiscoveryExecutor.runtimeDiscover(RuntimeDiscoveryExecutor.java:134)
at org.rhq.core.pc.inventory.RuntimeDiscoveryExecutor.call(RuntimeDiscoveryExecutor.java:94)
at org.rhq.core.pc.inventory.RuntimeDiscoveryExecutor.call(RuntimeDiscoveryExecutor.java:51)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:207)
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)
12:46:12,758 ERROR [modeshape] Exception invoking getConnectors
java.lang.reflect.UndeclaredThrowableException: Failed to invoke method 'getConnectors' on component 'ModeShapeEngine' with parameters [].
at org.jboss.profileservice.management.KernelBusRuntimeComponentDispatcher.invoke(KernelBusRuntimeComponentDispatcher.java:201)
at org.jboss.profileservice.management.DelegatingComponentDispatcherImpl.invoke(DelegatingComponentDispatcherImpl.java:69)
at sun.reflect.GeneratedMethodAccessor387.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.profileservice.remoting.ProfileServiceInvocationHandler.invoke(ProfileServiceInvocationHandler.java:97)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.remoting.MergeMetaDataInterceptor.invoke(MergeMetaDataInterceptor.java:74)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aop.generatedproxies.AOPProxy$1.invoke(AOPProxy$1.java)
at org.jboss.profileservice.management.ManagedOperationDelegate.invoke(ManagedOperationDelegate.java:64)
at org.modeshape.rhq.plugin.util.ModeShapeManagementView.executeManagedOperation(ModeShapeManagementView.java:135)
at org.modeshape.rhq.plugin.ConnectorDiscoveryComponent.discoverResources(ConnectorDiscoveryComponent.java:76)
at sun.reflect.GeneratedMethodAccessor323.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:244)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.modeshape.graph.connector.RepositorySourceException: java.lang.InterruptedException
at org.modeshape.graph.connector.RepositoryConnectionPool.getConnection(RepositoryConnectionPool.java:738)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
at org.jboss.beans.info.plugins.DefaultPropertyInfo.get(DefaultPropertyInfo.java:133)
at org.jboss.beans.info.plugins.BeanInfoUtil.getNestedTarget(BeanInfoUtil.java:78)
at org.jboss.beans.info.plugins.BeanInfoUtil.get(BeanInfoUtil.java:142)
at org.jboss.beans.info.plugins.AbstractBeanInfo.getProperty(AbstractBeanInfo.java:284)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCompositeValue(DefaultMetaValueFactory.java:481)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1134)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCompositeValue(DefaultMetaValueFactory.java:496)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1134)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCollectionValue(DefaultMetaValueFactory.java:254)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1140)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.create(DefaultMetaValueFactory.java:539)
at org.jboss.profileservice.management.AbstractRuntimeComponentDispatcher.create(AbstractRuntimeComponentDispatcher.java:95)
at org.jboss.profileservice.management.KernelBusRuntimeComponentDispatcher.invoke(KernelBusRuntimeComponentDispatcher.java:195)
at org.jboss.profileservice.management.DelegatingComponentDispatcherImpl.invoke(DelegatingComponentDispatcherImpl.java:69)
at sun.reflect.GeneratedMethodAccessor387.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.profileservice.remoting.ProfileServiceInvocationHandler.invoke(ProfileServiceInvocationHandler.java:97)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.remoting.MergeMetaDataInterceptor.invoke(MergeMetaDataInterceptor.java:74)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aop.generatedproxies.AOPProxy$1.invoke(AOPProxy$1.java)
at org.jboss.profileservice.management.ManagedOperationDelegate.invoke(ManagedOperationDelegate.java:64)
at org.modeshape.rhq.plugin.util.ModeShapeManagementView.executeManagedOperation(ModeShapeManagementView.java:135)
at org.modeshape.rhq.plugin.ConnectorDiscoveryComponent.discoverResources(ConnectorDiscoveryComponent.java:76)
at sun.reflect.GeneratedMethodAccessor323.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:244)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
... 18 more
Caused by: java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:1899)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1934)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
at org.modeshape.graph.connector.RepositoryConnectionPool.getConnection(RepositoryConnectionPool.java:734)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
at org.jboss.beans.info.plugins.DefaultPropertyInfo.get(DefaultPropertyInfo.java:133)
at org.jboss.beans.info.plugins.BeanInfoUtil.getNestedTarget(BeanInfoUtil.java:78)
at org.jboss.beans.info.plugins.BeanInfoUtil.get(BeanInfoUtil.java:142)
at org.jboss.beans.info.plugins.AbstractBeanInfo.getProperty(AbstractBeanInfo.java:284)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCompositeValue(DefaultMetaValueFactory.java:481)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1134)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCompositeValue(DefaultMetaValueFactory.java:496)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1134)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.createCollectionValue(DefaultMetaValueFactory.java:254)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.internalCreate(DefaultMetaValueFactory.java:1140)
at org.jboss.metatype.plugins.values.DefaultMetaValueFactory.create(DefaultMetaValueFactory.java:539)
at org.jboss.profileservice.management.AbstractRuntimeComponentDispatcher.create(AbstractRuntimeComponentDispatcher.java:95)
at org.jboss.profileservice.management.KernelBusRuntimeComponentDispatcher.invoke(KernelBusRuntimeComponentDispatcher.java:195)
at org.jboss.profileservice.management.DelegatingComponentDispatcherImpl.invoke(DelegatingComponentDispatcherImpl.java:69)
at sun.reflect.GeneratedMethodAccessor387.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.profileservice.remoting.ProfileServiceInvocationHandler.invoke(ProfileServiceInvocationHandler.java:97)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
... 18 more