On Sun, Dec 6, 2015 at 12:37 AM, Akila Ravihansa Perera <ravihansa@wso2.com> wrote:
I tried to deploy an application on EC2 and immediately undeployed it which caused the following exception. Also the EC2 instance did not get terminated. Noticed the following warning in the log;

[2015-12-06 00:29:51,337]  WARN {org.apache.stratos.common.concurrent.locks.ReadWriteLock} -  System warning! Trying to release a lock which has not been taken by the same thread: [lock-name] topology-manager [thread-id] 214 [thread-name] http-nio-9443-exec-17




[2015-12-06 00:29:51,309]  INFO {org.apache.stratos.autoscaler.client.AutoscalerCloudControllerClient} -  Terminating instance via cloud controller: [member] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain5545861a-0a1b-4532-830e-1c9beb2d8545
[2015-12-06 00:29:51,313] ERROR {org.apache.stratos.cloud.controller.services.impl.CloudControllerServiceImpl} -  Could not terminate instance, instance id is blank: [member-id] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain5545861a-0a1b-4532-830e-1c9beb2d8545 , removing member from topology...
[2015-12-06 00:29:51,319]  INFO {org.apache.stratos.cloud.controller.messaging.publisher.TopologyEventPublisher} -  Publishing member terminated event: [service-name] php-ec2 [cluster-id] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain [cluster-instance-id] single-cartridge-app-ec2-1 [member-id] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain5545861a-0a1b-4532-830e-1c9beb2d8545 [network-partition-id] network-partition-ec2 [partition-id] partition-1 [group-id] null
[2015-12-06 00:29:51,326]  INFO {org.apache.stratos.messaging.message.processor.topology.MemberTerminatedMessageProcessor} -  Member terminated: [service] php-ec2 [cluster] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain [member] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain5545861a-0a1b-4532-830e-1c9beb2d8545
[2015-12-06 00:29:51,326]  WARN {org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor} -  Obsolete member has either been terminated or its obsolete time out has expired and it is removed from obsolete members list: single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain5545861a-0a1b-4532-830e-1c9beb2d8545
[2015-12-06 00:29:51,327]  INFO {org.apache.stratos.autoscaler.status.processor.cluster.ClusterStatusTerminatedProcessor} -  Publishing Cluster terminated event for [application]: single-cartridge-app-ec2 [cluster]: single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain
[2015-12-06 00:29:51,335]  INFO {org.apache.stratos.cloud.controller.messaging.topology.TopologyBuilder} -  Cluster Terminated adding status started for and removing the cluster instancesingle-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain
[2015-12-06 00:29:51,337]  WARN {org.apache.stratos.common.concurrent.locks.ReadWriteLock} -  System warning! Trying to release a lock which has not been taken by the same thread: [lock-name] topology-manager [thread-id] 214 [thread-name] http-nio-9443-exec-17
[2015-12-06 00:29:51,346]  INFO {org.apache.stratos.cloud.controller.messaging.publisher.TopologyEventPublisher} -  Publishing Cluster terminated event: [application-id] single-cartridge-app-ec2 [cluster id] single-cartridge-app-ec2.my-php-app-ec2.php-ec2.domain [instance-id] single-cartridge-app-ec2-1 
[2015-12-06 00:29:51,348] ERROR {org.apache.stratos.autoscaler.rule.RuleTasksDelegator} -  Cannot terminate instance
org.apache.stratos.cloud.controller.stub.CloudControllerServiceCloudControllerExceptionException: CloudControllerServiceCloudControllerExceptionException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:379)
at org.apache.stratos.cloud.controller.stub.CloudControllerServiceStub.terminateInstance(CloudControllerServiceStub.java:8660)
at org.apache.stratos.autoscaler.client.AutoscalerCloudControllerClient.terminateInstance(AutoscalerCloudControllerClient.java:203)
at org.apache.stratos.autoscaler.rule.RuleTasksDelegator.terminateObsoleteInstance(RuleTasksDelegator.java:295)
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.mvel2.optimizers.impl.refl.nodes.MethodAccessor.getValue(MethodAccessor.java:48)
at org.mvel2.optimizers.impl.refl.nodes.VariableAccessor.getValue(VariableAccessor.java:37)
at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:108)
at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
at org.mvel2.MVEL.executeExpression(MVEL.java:930)
at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:104)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
at org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor.evaluate(ClusterMonitor.java:472)
at org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor.access$200(ClusterMonitor.java:86)
at org.apache.stratos.autoscaler.monitor.cluster.ClusterMonitor$2.run(ClusterMonitor.java:444)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
[2015-12-06 00:29:51,356]  INFO {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver} -  [ClusterTerminatedEvent] Received: class org.apache.stratos.messaging.event.topology.ClusterInstanceTerminatedEvent
[2015-12-06 00:29:51,356]  INFO {org.apache.stratos.autoscaler.status.processor.group.GroupStatusTerminatedProcessor} -  Sending application instance terminated for [application] single-cartridge-app-ec2 [instance] single-cartridge-app-ec2-1

Looking at the logs, it seems that the instance id has been null when the CC tries to terminate the instance, in the terminateInstance method. The instance id is returned with NodeMetadata when an instance is created in EC2. Maybe the instance id is null since the termination was started at the same moment in which the call to start the instance [1] is happening. In such cases the member is removed from the Topology and therefore the only option is to manually terminate it from the IaaS. IMHO such scenarios are difficult to handle from Stratos side. If the member is correctly removed from the Topology, then it should be fine.

[1]. computeService.createNodesInGroup


On Sun, Dec 6, 2015 at 12:20 AM, Akila Ravihansa Perera <ravihansa@wso2.com> wrote:

On Sat, Dec 5, 2015 at 8:02 PM, Gayan Gunarathne <gayang@wso2.com> wrote:
Modify it as 4.1.5-rc2

Thanks,
Gayan


On Sat, Dec 5, 2015 at 12:04 PM, Akila Ravihansa Perera <ravihansa@wso2.com> wrote:
Hi Gayan,

The vote is for the tag, not the binaries. Therefore we need to tag the code in order to vote. 

Also we do not tag with a release version (4.1.5) until the vote has passed. 

Could you please fix it?

Thanks.


On Friday, 4 December 2015, Imesh Gunaratne <imesh@apache.org> wrote:
Hi Gayan,

I do not see the 4.1.5-rc2 tag, have we created it as 4.1.5?

Thanks

On Thu, Dec 3, 2015 at 10:01 AM, Gayan Gunarathne <gayang@wso2.com> wrote:
Hi All,
 
This thread is for discussion of the second release candidate for Apache Stratos 4.1.5. Please use this thread for discussion of issues uncovered in the RC, questions you may have about the RC, etc.
 
The RC release packs could be found here [1]. A git tag (4.1.5) [2] has been created for this release and its tree view could be seen here [3].
 
[1] https://dist.apache.org/repos/dist/dev/stratos/releases/4.1.5-rc2/
[2] https://git-wip-us.apache.org/repos/asf?p=stratos.git;a=commit;h=a9f1f51a9ae2829d85bf7b8f2d8fb622db991d25
[3] https://git-wip-us.apache.org/repos/asf?p=stratos.git;a=tree;h=bf33be1ad90c9bd071a5ded8dd440eb83de80ead;hb=a9f1f51a9ae2829d85bf7b8f2d8fb622db991d25
 
Thanks,
The Apache Stratos team

--

Gayan Gunarathne
Technical Lead, WSO2 Inc. (http://wso2.com)
Committer & PMC Member, Apache Stratos
email : gayang@wso2.com  | mobile : +94 775030545
 
 



--
Imesh Gunaratne

Senior Technical Lead, WSO2
Committer & PMC Member, Apache Stratos


--
Akila Ravihansa Perera
WSO2 Inc.;  http://wso2.com/

Blog: http://ravihansa3000.blogspot.com




--

Gayan Gunarathne
Technical Lead, WSO2 Inc. (http://wso2.com)
Committer & PMC Member, Apache Stratos
email : gayang@wso2.com  | mobile : +94 775030545
 
 



--
Akila Ravihansa Perera
WSO2 Inc.;  http://wso2.com/

Blog: http://ravihansa3000.blogspot.com



--