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From "Lahiru Sandaruwan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (STRATOS-1218) Error "Failed to retrieve topology event message" occurs after running the dependency scaling sample sometime
Date Fri, 27 Feb 2015 01:06:07 GMT
Lahiru Sandaruwan created STRATOS-1218:
------------------------------------------

             Summary: Error "Failed to retrieve topology event message" occurs after running
the dependency scaling sample sometime
                 Key: STRATOS-1218
                 URL: https://issues.apache.org/jira/browse/STRATOS-1218
             Project: Stratos
          Issue Type: Bug
          Components: Autoscaler
    Affects Versions: 4.1.0 Alpha
            Reporter: Lahiru Sandaruwan
             Fix For: 4.1.0 RC1


[2015-02-27 06:14:06,463]  INFO {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
-   Cluster monitor has scaling dependents  [true] 
[2015-02-27 06:14:06,473]  INFO {org.apache.stratos.cloud.controller.services.impl.CloudControllerServiceImpl}
-  Getting deployment policy: [deployment-policy_id] deployment-policy-1
[2015-02-27 06:14:06,477]  INFO {org.apache.stratos.mock.iaas.api.MockIaasApi} -  Starting
mock instance: [member-id] my-tomcat.tomcat.domain77e82b9c-0b5d-432a-9b02-0f058f855c03
[2015-02-27 06:14:06,478]  INFO {org.apache.stratos.mock.iaas.services.impl.MockInstance}
-  Mock member started: [member-id] my-tomcat.tomcat.domain77e82b9c-0b5d-432a-9b02-0f058f855c03
[2015-02-27 06:14:06,480]  INFO {org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor}
-  Dependent monitor already created, creating instance: [application] dependency-scaling-cartridges-app
[component] my-tomcat.tomcat.domain
[2015-02-27 06:14:06,482] ERROR {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
-  Failed to retrieve topology event message
java.lang.NullPointerException
	at org.apache.stratos.autoscaler.context.cluster.ClusterContext.addInstanceContext(ClusterContext.java:142)
	at org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:474)
	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)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersRemovedMessageProcessor.process(ApplicationClustersRemovedMessageProcessor.java:63)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersCreatedMessageProcessor.process(ApplicationClustersCreatedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceRemovedMessageProcessor.process(ServiceRemovedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceCreatedMessageProcessor.process(ServiceCreatedMessageProcessor.java:65)
	at org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor.process(CompleteTopologyMessageProcessor.java:74)
	at org.apache.stratos.messaging.message.processor.MessageProcessorChain.process(MessageProcessorChain.java:60)
	at org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator.run(TopologyEventMessageDelegator.java:73)
	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)
[2015-02-27 06:14:06,484]  INFO {org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor}
-  Notifying the [child] my-php.php.domain [instance] dependency-scaling-cartridges-app-1
with the highest [factor] 1.5 upon decision of dependent scaling
[2015-02-27 06:14:06,484]  INFO {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor}
-  Parent scaling event received to [cluster]: my-php.php.domain, [network partition]: network-partition-1,
[event] my-php.php.domain, [group instance] dependency-scaling-cartridges-app-1, [factor]
1.5
[2015-02-27 06:14:06,485] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  Running dependent
scaling rule: [network-partition] network-partition-1 [cluster-instance] dependency-scaling-cartridges-app-1
[2015-02-27 06:14:06,485]  INFO {org.apache.stratos.autoscaler.rule.RuleLog} -  [scale-up]
Required member count based on dependecy scaling is higher than max, hence
                            notifying to parent for possible group scaling or app bursting.
                            [cluster] my-php.php.domain [instance id]dependency-scaling-cartridges-app-1
[max] 4
[2015-02-27 06:14:06,486] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependent-scale]
is running for [cluster] my-php.php.domain [cluster-instance] dependency-scaling-cartridges-app-1
max member count is: 4 current member count is: 2
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsUpdater}
-  Continuing last sample value: [cartridge-type] tomcat [factor] LoadAverage [value] 20
[2015-02-27 06:14:06,486] DEBUG {org.apache.stratos.autoscaler.algorithm.OneAfterAnother}
-  [one-after-another algorithm] [scale-up] [partition] partition-1 has space to create members.
[non terminated count] 2 [max] 5
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsUpdater}
-  Continuing last sample value: [cartridge-type] tomcat [factor] MemoryConsumption [value]
20
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor}
-  Handling application busting, since resources are exhausted in this application instance

[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updaters scheduled: [service-name] tomcat
[2015-02-27 06:14:06,487]  WARN {org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor}
-  [Application] dependency-scaling-cartridges-app cannot be burst as no available resources
found
[2015-02-27 06:14:06,487]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updater task stopped: [service-name] tomcat [factor] MemoryConsumption
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependency-scale][scale-up]
Partition available, hence trying to spawn an instance to scale up!
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updater task stopped: [service-name] tomcat [factor] LoadAverage
[2015-02-27 06:14:06,487] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependency-scale][scale-up]
 [partition] partition-1 [cluster] my-php.php.domain
[2015-02-27 06:14:06,487]  INFO {org.apache.stratos.autoscaler.client.CloudControllerClient}
-  Trying to spawn an instance via cloud controller: [cluster] my-php.php.domain [partition]
partition-1 [network-partition-id] network-partition-1
[2015-02-27 06:14:06,494]  INFO {org.apache.stratos.cloud.controller.messaging.publisher.TopologyEventPublisher}
-  Publishing cluster instance created event: [service-name] tomcat [cluster-id] my-tomcat.tomcat.domain
 in [network-partition-id] null [instance-id] dependency-scaling-cartridges-app-2
[2015-02-27 06:14:06,498]  INFO {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
-   Cluster monitor has scaling dependents  [true] 
[2015-02-27 06:14:06,504]  INFO {org.apache.stratos.cloud.controller.services.impl.CloudControllerServiceImpl}
-  Getting deployment policy: [deployment-policy_id] deployment-policy-1
[2015-02-27 06:14:06,508] ERROR {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
-  Failed to retrieve topology event message
java.lang.NullPointerException
	at org.apache.stratos.autoscaler.context.cluster.ClusterContext.addInstanceContext(ClusterContext.java:142)
	at org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:474)
	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)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersRemovedMessageProcessor.process(ApplicationClustersRemovedMessageProcessor.java:63)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersCreatedMessageProcessor.process(ApplicationClustersCreatedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceRemovedMessageProcessor.process(ServiceRemovedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceCreatedMessageProcessor.process(ServiceCreatedMessageProcessor.java:65)
	at org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor.process(CompleteTopologyMessageProcessor.java:74)
	at org.apache.stratos.messaging.message.processor.MessageProcessorChain.process(MessageProcessorChain.java:60)
	at org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator.run(TopologyEventMessageDelegator.java:73)
	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)
[2015-02-27 06:14:06,463]  INFO {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
-   Cluster monitor has scaling dependents  [true] 
[2015-02-27 06:14:06,473]  INFO {org.apache.stratos.cloud.controller.services.impl.CloudControllerServiceImpl}
-  Getting deployment policy: [deployment-policy_id] deployment-policy-1
[2015-02-27 06:14:06,477]  INFO {org.apache.stratos.mock.iaas.api.MockIaasApi} -  Starting
mock instance: [member-id] my-tomcat.tomcat.domain77e82b9c-0b5d-432a-9b02-0f058f855c03
[2015-02-27 06:14:06,478]  INFO {org.apache.stratos.mock.iaas.services.impl.MockInstance}
-  Mock member started: [member-id] my-tomcat.tomcat.domain77e82b9c-0b5d-432a-9b02-0f058f855c03
[2015-02-27 06:14:06,480]  INFO {org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor}
-  Dependent monitor already created, creating instance: [application] dependency-scaling-cartridges-app
[component] my-tomcat.tomcat.domain
[2015-02-27 06:14:06,482] ERROR {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
-  Failed to retrieve topology event message
java.lang.NullPointerException
	at org.apache.stratos.autoscaler.context.cluster.ClusterContext.addInstanceContext(ClusterContext.java:142)
	at org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:474)
	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)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersRemovedMessageProcessor.process(ApplicationClustersRemovedMessageProcessor.java:63)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersCreatedMessageProcessor.process(ApplicationClustersCreatedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceRemovedMessageProcessor.process(ServiceRemovedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceCreatedMessageProcessor.process(ServiceCreatedMessageProcessor.java:65)
	at org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor.process(CompleteTopologyMessageProcessor.java:74)
	at org.apache.stratos.messaging.message.processor.MessageProcessorChain.process(MessageProcessorChain.java:60)
	at org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator.run(TopologyEventMessageDelegator.java:73)
	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)
[2015-02-27 06:14:06,484]  INFO {org.apache.stratos.autoscaler.monitor.component.ParentComponentMonitor}
-  Notifying the [child] my-php.php.domain [instance] dependency-scaling-cartridges-app-1
with the highest [factor] 1.5 upon decision of dependent scaling
[2015-02-27 06:14:06,484]  INFO {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor}
-  Parent scaling event received to [cluster]: my-php.php.domain, [network partition]: network-partition-1,
[event] my-php.php.domain, [group instance] dependency-scaling-cartridges-app-1, [factor]
1.5
[2015-02-27 06:14:06,485] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  Running dependent
scaling rule: [network-partition] network-partition-1 [cluster-instance] dependency-scaling-cartridges-app-1
[2015-02-27 06:14:06,485]  INFO {org.apache.stratos.autoscaler.rule.RuleLog} -  [scale-up]
Required member count based on dependecy scaling is higher than max, hence
                            notifying to parent for possible group scaling or app bursting.
                            [cluster] my-php.php.domain [instance id]dependency-scaling-cartridges-app-1
[max] 4
[2015-02-27 06:14:06,486] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependent-scale]
is running for [cluster] my-php.php.domain [cluster-instance] dependency-scaling-cartridges-app-1
max member count is: 4 current member count is: 2
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsUpdater}
-  Continuing last sample value: [cartridge-type] tomcat [factor] LoadAverage [value] 20
[2015-02-27 06:14:06,486] DEBUG {org.apache.stratos.autoscaler.algorithm.OneAfterAnother}
-  [one-after-another algorithm] [scale-up] [partition] partition-1 has space to create members.
[non terminated count] 2 [max] 5
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsUpdater}
-  Continuing last sample value: [cartridge-type] tomcat [factor] MemoryConsumption [value]
20
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor}
-  Handling application busting, since resources are exhausted in this application instance

[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updaters scheduled: [service-name] tomcat
[2015-02-27 06:14:06,487]  WARN {org.apache.stratos.autoscaler.monitor.component.ApplicationMonitor}
-  [Application] dependency-scaling-cartridges-app cannot be burst as no available resources
found
[2015-02-27 06:14:06,487]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updater task stopped: [service-name] tomcat [factor] MemoryConsumption
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependency-scale][scale-up]
Partition available, hence trying to spawn an instance to scale up!
[2015-02-27 06:14:06,486]  INFO {org.apache.stratos.mock.iaas.statistics.generator.MockHealthStatisticsGenerator}
-  Mock statistics updater task stopped: [service-name] tomcat [factor] LoadAverage
[2015-02-27 06:14:06,487] DEBUG {org.apache.stratos.autoscaler.rule.RuleLog} -  [dependency-scale][scale-up]
 [partition] partition-1 [cluster] my-php.php.domain
[2015-02-27 06:14:06,487]  INFO {org.apache.stratos.autoscaler.client.CloudControllerClient}
-  Trying to spawn an instance via cloud controller: [cluster] my-php.php.domain [partition]
partition-1 [network-partition-id] network-partition-1
[2015-02-27 06:14:06,494]  INFO {org.apache.stratos.cloud.controller.messaging.publisher.TopologyEventPublisher}
-  Publishing cluster instance created event: [service-name] tomcat [cluster-id] my-tomcat.tomcat.domain
 in [network-partition-id] null [instance-id] dependency-scaling-cartridges-app-2
[2015-02-27 06:14:06,498]  INFO {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
-   Cluster monitor has scaling dependents  [true] 
[2015-02-27 06:14:06,504]  INFO {org.apache.stratos.cloud.controller.services.impl.CloudControllerServiceImpl}
-  Getting deployment policy: [deployment-policy_id] deployment-policy-1
[2015-02-27 06:14:06,508] ERROR {org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator}
-  Failed to retrieve topology event message
java.lang.NullPointerException
	at org.apache.stratos.autoscaler.context.cluster.ClusterContext.addInstanceContext(ClusterContext.java:142)
	at org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver$14.onEvent(AutoscalerTopologyEventReceiver.java:474)
	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)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersRemovedMessageProcessor.process(ApplicationClustersRemovedMessageProcessor.java:63)
	at org.apache.stratos.messaging.message.processor.topology.ApplicationClustersCreatedMessageProcessor.process(ApplicationClustersCreatedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceRemovedMessageProcessor.process(ServiceRemovedMessageProcessor.java:64)
	at org.apache.stratos.messaging.message.processor.topology.ServiceCreatedMessageProcessor.process(ServiceCreatedMessageProcessor.java:65)
	at org.apache.stratos.messaging.message.processor.topology.CompleteTopologyMessageProcessor.process(CompleteTopologyMessageProcessor.java:74)
	at org.apache.stratos.messaging.message.processor.MessageProcessorChain.process(MessageProcessorChain.java:60)
	at org.apache.stratos.messaging.message.receiver.topology.TopologyEventMessageDelegator.run(TopologyEventMessageDelegator.java:73)
	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)




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