Hi,
While checking the tasks observer the following error.
This happens only when scheduling a task from manager. My understanding was
NTASK have the same behavior in manager and worker nodes. Is it the case?
This happens because in the following code. When starting manager node
memberlist is empty. But starting a worker first, member list contains that
member.
I guess this is a bug?
This will not effect the functionality in ESB however error is printed on
startup.
TaskServiceContext ctx = this.getTaskServiceContext();
if (ctx.getServerCount() == 0) {
throw new TaskException("No available task nodes for resolving
a task location",
Code.TASK_NODE_NOT_AVAILABLE);
}
[1]
https://github.com/wso2/carbon-commons/blob/master/components/ntask/org.wso2.carbon.ntask.core/src/main/java/org/wso2/carbon/ntask/core/impl/clustered/ClusteredTaskManager.java
[2]
https://github.com/wso2/carbon-commons/blob/master/components/ntask/org.wso2.carbon.ntask.core/src/main/java/org/wso2/carbon/ntask/core/TaskServiceContext.java
[2015-05-27 09:39:42,807] ERROR - NTaskTaskManager Scheduling task
[[NTask::-1234::file-FILE--SYNAPSE_INBOUND_ENDPOINT]::FILE--SYNAPSE_INBOUND_ENDPOINT]
FAILED. Error: No available task nodes for resolving a task location
org.wso2.carbon.ntask.common.TaskException: No available task nodes for
resolving a task location
at
org.wso2.carbon.ntask.core.impl.clustered.ClusteredTaskManager.getTaskLocation(ClusteredTaskManager.java:224)
at
org.wso2.carbon.ntask.core.impl.clustered.ClusteredTaskManager.locateMemberForTask(ClusteredTaskManager.java:201)
at
org.wso2.carbon.ntask.core.impl.clustered.ClusteredTaskManager.getMemberIdFromTaskName(ClusteredTaskManager.java:275)
at
org.wso2.carbon.ntask.core.impl.clustered.ClusteredTaskManager.scheduleTask(ClusteredTaskManager.java:86)
at
org.wso2.carbon.mediation.ntask.NTaskTaskManager.schedule(NTaskTaskManager.java:89)
at
org.wso2.carbon.mediation.ntask.NTaskTaskManager.init(NTaskTaskManager.java:336)
at
org.wso2.carbon.mediation.ntask.NTaskTaskManager.update(NTaskTaskManager.java:349)
at
org.wso2.carbon.mediation.ntask.internal.NtaskService.updateAndCleanupObservers(NtaskService.java:103)
at
org.wso2.carbon.mediation.ntask.internal.NtaskService.setConfigurationContextService(NtaskService.java:96)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.eclipse.equinox.internal.ds.model.ComponentReference.bind(ComponentReference.java:376)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference(ServiceComponentProp.java:430)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bind(ServiceComponentProp.java:218)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:343)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at
org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at
org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
at
org.wso2.carbon.ntask.core.internal.TasksDSComponent.activate(TasksDSComponent.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at
org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at
org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
at
org.wso2.carbon.core.internal.StartupFinalizerServiceComponent.completeInitialization(StartupFinalizerServiceComponent.java:199)
at
org.wso2.carbon.core.internal.StartupFinalizerServiceComponent.serviceChanged(StartupFinalizerServiceComponent.java:288)
at
org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
at
org.wso2.carbon.throttling.agent.internal.ThrottlingAgentServiceComponent.registerThrottlingAgent(ThrottlingAgentServiceComponent.java:123)
at
org.wso2.carbon.throttling.agent.internal.ThrottlingAgentServiceComponent.activate(ThrottlingAgentServiceComponent.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at
org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at
org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
at
org.wso2.carbon.core.init.CarbonServerManager.initializeCarbon(CarbonServerManager.java:517)
at
org.wso2.carbon.core.init.CarbonServerManager.start(CarbonServerManager.java:219)
at
org.wso2.carbon.core.internal.CarbonCoreServiceComponent.activate(CarbonCoreServiceComponent.java:91)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at
org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at
org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at
org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at
org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at
org.eclipse.equinox.http.servlet.internal.Activator.registerHttpService(Activator.java:81)
at
org.eclipse.equinox.http.servlet.internal.Activator.addProxyServlet(Activator.java:60)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.init(ProxyServlet.java:40)
at
org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.init(DelegationServlet.java:38)
at
org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
at
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5262)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5550)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Best Regards,
Malaka Silva
Senior Tech Lead
M: +94 777 219 791
Tel : 94 11 214 5345
Fax :94 11 2145300
Skype : malaka.sampath.silva
LinkedIn : http://www.linkedin.com/pub/malaka-silva/6/33/77
Blog : http://mrmalakasilva.blogspot.com/
WSO2, Inc.
lean . enterprise . middleware
http://www.wso2.com/
http://www.wso2.com/about/team/malaka-silva/
<http://wso2.com/about/team/malaka-silva/>
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