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https://issues.apache.org/jira/browse/CLOUDSTACK-9413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15571259#comment-15571259
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Javier Ayllon commented on CLOUDSTACK-9413:
-------------------------------------------

I've found the same issue in my logs. Same version for CS and CentOS, No impact 
on functionality found.

> VmIpFetchTask NullPointerException
> ----------------------------------
>
>                 Key: CLOUDSTACK-9413
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9413
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server
>    Affects Versions: 4.8.0
>         Environment: CentOS 6.8 (latest)
>            Reporter: Fabian Stelzer
>            Priority: Minor
>
> I'm getting the following exception in the management server logs exactly 
> every 3 minutes. However i don't see any impact on production or management 
> functionality.
> [c.c.v.UserVmManagerImpl] (UserVm-Scavenger-1:ctx-33f26ddb) Caught the 
> Exception in VmIpFetchTask
> java.lang.NullPointerException
>       at 
> com.cloud.vm.UserVmManagerImpl$VmIpFetchTask.runInContext(UserVmManagerImpl.java:2221)
>       at 
> org.apache.cloudstack.managed.context.ManagedContextRunnable$1.run(ManagedContextRunnable.java:49)
>       at 
> org.apache.cloudstack.managed.context.impl.DefaultManagedContext$1.call(DefaultManagedContext.java:56)
>       at 
> org.apache.cloudstack.managed.context.impl.DefaultManagedContext.callWithContext(DefaultManagedContext.java:103)
>       at 
> org.apache.cloudstack.managed.context.impl.DefaultManagedContext.runWithContext(DefaultManagedContext.java:53)
>       at 
> org.apache.cloudstack.managed.context.ManagedContextRunnable.run(ManagedContextRunnable.java:46)
>       at 
> java.util.concurrent.Executors$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)



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