Hi Martin, Yes this error is raised when Autosclaer cannot find aliases in the deployment policy to match the ones in the application definition.
We will add more validations to the application creation and deployment api methods to avoid these errors. Appologies for the inconvenience caused. Thanks On Tue, Dec 23, 2014 at 4:29 AM, Martin Eppel (meppel) <[email protected]> wrote: > Never mind – please disregard, somehow I was still using the old policy > with the “childId” reference, I thought I had changed it > > > > Martin > > > > *From:* Martin Eppel (meppel) > *Sent:* Monday, December 22, 2014 2:19 PM > *To:* [email protected] > *Subject:* RE: NPE in ParentComponentMonitor > > > > Hi Imesh, > > > > I updated my code base today (Monday 12/22) and still see the exception > below once I deploy the deployment policy – is there something else I need > to add in the deployment policy. I attached the deployment policy to the > email, please take a look and verify, > > > > Thanks > > > > Martin > > > > TID: [0] [STRATOS] [2014-12-22 22:09:12,686] ERROR > {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator} > - Failed to retrieve topology event message > {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator} > > java.lang.NullPointerException > > at > org.apache.stratos.autoscaler.pojo.policy.deployment.DeploymentPolicy.getChildPolicy(DeploymentPolicy.java:214) > > at > org.apache.stratos.autoscaler.context.cluster.ClusterContext.addInstanceContext(ClusterContext.java:129) > > at > org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:459) > > at > org.apache.stratos.messaging.listener.EventListener.update(EventListener.java:42) > > at java.util.Observable.notifyObservers(Observable.java:159) > > at > org.apache.stratos.messaging.event.EventObservable.notifyEventListeners(EventObservable.java:51) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterInstanceCreatedMessageProcessor.doProcess(ClusterInstanceCreatedMessageProcessor.java:131) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterInstanceCreatedMessageProcessor.process(ClusterInstanceCreatedMessageProcessor.java:60) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterInstanceTerminatedProcessor.process(ClusterInstanceTerminatedProcessor.java:73) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterRemovedMessageProcessor.process(ClusterRemovedMessageProcessor.java:65) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterInstanceInactivateProcessor.process(ClusterInstanceInactivateProcessor.java:73) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterInstanceActivatedProcessor.process(ClusterInstanceActivatedProcessor.java:73) > > at > org.apache.stratos.messaging.message.processor.topology.ClusterCreatedMessageProcessor.process(ClusterCreatedMessageProcessor.java:65) > > > > *From:* Imesh Gunaratne [mailto:[email protected] <[email protected]>] > *Sent:* Thursday, December 18, 2014 9:44 PM > *To:* dev > *Subject:* Re: NPE in ParentComponentMonitor > > > > I have now verified this fix and pushed it to master branch. Please review. > > > > Thanks > > > > On Fri, Dec 19, 2014 at 10:46 AM, Imesh Gunaratne <[email protected]> > wrote: > > Hi Martin, > > > > The above error (related to the child policy) may have occurred due to the > modification we did to change the "childId" attribute to "alias" in the > deployment policy. This was discussed in mail thread "[Discuss] The term > "ChildId" in the Deployment Policy refers to "Alias" in the Application". > > > > I have now done a fix for the issue described in $subject. Will verify and > update soon. > > > > Thanks > > > > On Fri, Dec 19, 2014 at 3:33 AM, Martin Eppel (meppel) <[email protected]> > wrote: > > I tried to fix it by adding a check (see code snippet) which resolved > the NPE below but caused a new one – I guess it needs more than that … > > > > Code snippet: > > … > > *if (scalingDependencies != null && !scalingDependencies.isEmpty()) {* > > * for (ScalingDependentList scalingDependentList : > scalingDependencies) {* > > * ScalingEvent highestFactorEvent = null;* > > * for (String scalingDependentListComponent : > scalingDependentList.* > > … > > > > New NPE (with fix from code snippet): > > > > *TID: [0] [STRATOS] [2014-12-18 21:56:50,452] ERROR > {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator} > - Failed to retrieve topology event message > {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}* > > *java.lang.NullPointerException* > > * at > org.apache.stratos.autoscaler.pojo.policy.deployment.DeploymentPolicy.getChildPolicy(DeploymentPolicy.java:213)* > > * at > org.apache.stratos.autoscaler.context.cluster.VMClusterContext.addInstanceContext(VMClusterContext.java:129)* > > * at > org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:459)* > > * at > org.apache.stratos.messaging.listener.EventListener.update(EventListener.java:42)* > > > > *From:* Imesh Gunaratne [mailto:[email protected]] > *Sent:* Thursday, December 18, 2014 11:48 AM > *To:* dev > *Subject:* NPE in ParentComponentMonitor > > > > Hi Devs, > > > > I'm seeing the below NPE in ParentComponentMonitor: > > > > [2014-12-19 01:15:25,836] INFO > {org.apache.stratos.autoscaler.applications.topic.ApplicationsEventPublisher} > - Publishing Application Active event for [application]: single-group-app > [instance]:single-group-app-1 > > [2014-12-19 01:15:25,866] INFO > {org.apache.stratos.autoscaler.applications.topic.ApplicationsEventPublisher} > - Publishing Group activated event for [application]: single-group-app > [group]: single-group-app-group-1 [instance]:single-group-app-1 > > [2014-12-19 01:16:04,117] ERROR > {org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor} - > Application monitor failed : > org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor@21d2042d > > java.lang.NullPointerException > > at > org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor.handleDependentScaling(ParentComponentMonitor.java:573) > > at > org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor$1.run(ApplicationMonitor.java:117) > > at > org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor.monitor(ApplicationMonitor.java:125) > > at > org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor.run(ApplicationMonitor.java:74) > > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > > at > java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) > > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) > > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) > > 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) > > > > Thanks > > > > > -- > > Imesh Gunaratne > > > > Technical Lead, WSO2 > > Committer & PMC Member, Apache Stratos > > > > > -- > > Imesh Gunaratne > > > > Technical Lead, WSO2 > > Committer & PMC Member, Apache Stratos > > > > > -- > > Imesh Gunaratne > > > > Technical Lead, WSO2 > > Committer & PMC Member, Apache Stratos > -- Imesh Gunaratne Technical Lead, WSO2 Committer & PMC Member, Apache Stratos
