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https://issues.apache.org/jira/browse/MESOS-168?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Hindman resolved MESOS-168.
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    Resolution: Fixed
      Assignee: Benjamin Hindman

This has been fixed in r1301219.
                
> Really bad timing can cause one framework PID to be registered with two IDs
> ---------------------------------------------------------------------------
>
>                 Key: MESOS-168
>                 URL: https://issues.apache.org/jira/browse/MESOS-168
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Charles Reiss
>            Assignee: Benjamin Hindman
>
> If message delivery is delayed enough, it's possible for a framework not to 
> receive its FrameworkRegisteredMessage (with ID "A") before its (one second) 
> timer to resend its RegisterFrameworkMessage (as part of reliable 
> registration). The master will happily register the same framework PID again 
> with a different framework ID (with ID "B"). The framework will receive 
> offers for both ID "A" and ID "B", but will reply to offers as ID "B", 
> causing the framework to CHECK()-fail when it checks the validity of the 
> offers.

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