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https://issues.apache.org/jira/browse/CLOUDSTACK-9094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rohit Yadav closed CLOUDSTACK-9094.
-----------------------------------
    Resolution: Fixed

PR merged.

> Multiple threads are being used to collect the stats from the same VR
> ---------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9094
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9094
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server, Virtual Router
>    Affects Versions: 4.6.0
>            Reporter: Harikrishna Patnala
>            Assignee: Harikrishna Patnala
>             Fix For: Future
>
>
> From the logs we can see that the management server is sending the 
> networkusagecommand to a VR twice within a very short interval. This doesn't 
> have any impact on the network usage being reported, however it seems to 
> consume direct agent threads unnecessarily.
> See the below snippet from the logs where networkusage command was sent to 
> the same VR at the same time
> 2014-03-04 00:02:07,178 DEBUG [agent.manager.DirectAgentAttache] 
> (DirectAgent-113:null) Seq 10-1242718973: Executing request
> 2014-03-04 00:02:07,482 DEBUG [agent.manager.DirectAgentAttache] 
> (DirectAgent-113:null) Seq 10-1242718973: Response Received:
> 2014-03-04 00:02:07,482 DEBUG [agent.transport.Request] 
> (DirectAgent-113:null) Seq 10-1242718973: Processing:  { Ans: , MgmtId: 
> 144027776315500, via: 10, Ver: v1, Flags: 10, 
> [{"com.cloud.agent.api.NetworkUsageAnswer":{"routerName":"r-59-VM","bytesSent":2937782,"bytesReceived":114175352,"result":true,"details":"","wait":0}}]
>  }
> 2014-03-04 00:02:07,482 DEBUG [agent.transport.Request] 
> (RouterMonitor-1:null) Seq 10-1242718973: Received:  { Ans: , MgmtId: 
> 144027776315500, via: 10, Ver: v1, Flags: 10, { NetworkUsageAnswer } }
> 2014-03-04 00:02:07,482 DEBUG [agent.manager.AgentManagerImpl] 
> (RouterMonitor-1:null) Details from executing class 
> com.cloud.agent.api.NetworkUsageCommand:
> 2014-03-04 00:02:07,198 DEBUG [agent.manager.DirectAgentAttache] 
> (DirectAgent-244:null) Seq 10-1242718974: Executing request
> 2014-03-04 00:02:07,510 DEBUG [agent.manager.DirectAgentAttache] 
> (DirectAgent-244:null) Seq 10-1242718974: Response Received:
> 2014-03-04 00:02:07,510 DEBUG [agent.transport.Request] 
> (DirectAgent-244:null) Seq 10-1242718974: Processing:  { Ans: , MgmtId: 
> 144027776315500, via: 10, Ver: v1, Flags: 10, 
> [{"com.cloud.agent.api.NetworkUsageAnswer":{"routerName":"r-59-VM","bytesSent":2937782,"bytesReceived":114175352,"result":true,"details":"","wait":0}}]
>  }
> 2014-03-04 00:02:07,510 DEBUG [agent.transport.Request] 
> (RouterMonitor-1:null) Seq 10-1242718974: Received:  { Ans: , MgmtId: 
> 144027776315500, via: 10, Ver: v1, Flags: 10, { NetworkUsageAnswer } }
> 2014-03-04 00:02:07,510 DEBUG [agent.manager.AgentManagerImpl] 
> (RouterMonitor-1:null) Details from executing class 
> com.cloud.agent.api.NetworkUsageCommand:
> 2014-03-04 00:02:07,513 DEBUG 
> [network.router.VirtualNetworkApplianceManagerImpl] (RouterMonitor-1:null) 
> Router stats changed from the time NetworkUsageCommand was sent. Ignoring 
> current answer. Router: r-59-VM Rcvd: 114175352Sent: 2937782
> 2014-03-04 00:02:07,514 DEBUG [db.Transaction.Transaction] 
> (RouterMonitor-1:null) Rolling back the transaction: Time = 2 Name =  
> -VirtualNetworkApplianceManagerImpl$NetworkUsageTask.run:900-Executors$RunnableAdapter.call:471-FutureTask$Sync.innerRunAndReset:351-FutureTask.runAndReset:178-ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201:165-ScheduledThreadPoolExecutor$ScheduledFutureTask.run:267-ThreadPoolExecutor.runWorker:1146-ThreadPoolExecutor$Worker.run:615-Thread.run:701;
>  called by 
> -Transaction.rollback:897-Transaction.removeUpTo:840-Transaction.close:664-VirtualNetworkApplianceManagerImpl$NetworkUsageTask.run:955-Executors$RunnableAdapter.call:471-FutureTask$Sync.innerRunAndReset:351-FutureTask.runAndReset:178-ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201:165-ScheduledThreadPoolExecutor$ScheduledFutureTask.run:267-ThreadPoolExecutor.runWorker:1146-ThreadPoolExecutor$Worker.run:615-Thread.run:701



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