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https://issues.apache.org/jira/browse/STRATOS-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15020419#comment-15020419
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Rajkumar Rajaratnam commented on STRATOS-1621:
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Hi Isuru,
Do you still get this error?
Thanks,
Raj.
> NPE Application Undeployment
> ----------------------------
>
> Key: STRATOS-1621
> URL: https://issues.apache.org/jira/browse/STRATOS-1621
> Project: Stratos
> Issue Type: Bug
> Affects Versions: 4.1.4
> Reporter: Isuru Haththotuwa
> Priority: Minor
> Fix For: FUTURE
>
>
> Following NPE can be observed in application undeployment:
> [2015-11-17 09:29:19,187] INFO
> {org.apache.stratos.autoscaler.services.impl.AutoscalerServiceImpl} -
> Application undeployment process started: [application-id] wso2as-521-app
> [2015-11-17 09:29:19,220] INFO
> {org.apache.stratos.cloud.controller.messaging.topology.TopologyBuilder} -
> Cluster Terminating started for wso2as-521-app.wso2as-521-1.wso2as-521.domain
> [2015-11-17 09:29:19,240] INFO
> {org.apache.stratos.cloud.controller.messaging.publisher.TopologyEventPublisher}
> - Publishing Cluster terminating event: [application-id] wso2as-521-app
> [cluster id] wso2as-521-app.wso2as-521-1.wso2as-521.domain [instance-id]
> wso2as-521-app-1
> [2015-11-17 09:29:19,263] INFO
> {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
> - [ClusterTerminatingEvent] Received: class
> org.apache.stratos.messaging.event.topology.ClusterInstanceTerminatingEvent
> [2015-11-17 09:29:19,265] INFO
> {org.apache.stratos.autoscaler.event.publisher.InstanceNotificationPublisher}
> - Publishing Instance Cleanup Event: [cluster]
> wso2as-521-app.wso2as-521-1.wso2as-521.domain [cluster-instance]
> wso2as-521-app-1
> [2015-11-17 09:29:19,274] INFO
> {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor} - Starting to
> terminate all members in cluster
> [wso2as-521-app.wso2as-521-1.wso2as-521.domain] Network Partition
> [network-partition-ec2], Partition [partition-2]
> [2015-11-17 09:29:19,276] INFO
> {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor} - Starting to
> terminate all members in cluster
> [wso2as-521-app.wso2as-521-1.wso2as-521.domain] Network Partition
> [network-partition-ec2], Partition [partition-1]
> [2015-11-17 09:29:19,276] INFO
> {org.apache.stratos.autoscaler.event.publisher.InstanceNotificationPublisher}
> - Publishing Instance Cleanup Event: [cluster]
> wso2as-521-app.wso2as-521-1.wso2as-521.domain [cluster-instance]
> wso2as-521-app-1
> [2015-11-17 09:29:19,275] WARN
> {org.apache.stratos.autoscaler.status.processor.cluster.ClusterStatusActiveProcessor}
> - No possible state change found for [type] [cluster]
> wso2as-521-app.wso2as-521-1.wso2as-521.domain [instance] wso2as-521-app-1
> [2015-11-17 09:29:19,276] INFO
> {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor} - Starting to
> move all members in cluster [wso2as-521-app.wso2as-521-1.wso2as-521.domain]
> Network Partition [network-partition-ec2], Partition [partition-2] to
> termination pending list
> [2015-11-17 09:29:19,284] INFO
> {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor} - Starting to
> move all members in cluster [wso2as-521-app.wso2as-521-1.wso2as-521.domain]
> Network Partition [network-partition-ec2], Partition [partition-1] to
> termination pending list
> [2015-11-17 09:29:19,292] INFO
> {org.apache.stratos.cloud.controller.messaging.topology.TopologyBuilder} -
> member maintenance mode event adding status started
> Exception in thread "Active to Terminating pending adder - [cluster id]
> wso2as-521-app.wso2as-521-1.wso2as-521.domain" java.lang.NullPointerException
> at
> org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor$6.run(ClusterMonitor.java:1361)
> at java.lang.Thread.run(Thread.java:745)
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