Sheng Yang created CLOUDSTACK-6218:
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             Summary: VR commands need to be serialized in VR resource
                 Key: CLOUDSTACK-6218
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-6218
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Virtual Router
    Affects Versions: 4.4.0
            Reporter: Sheng Yang
            Assignee: Sheng Yang
             Fix For: 4.4.0


In very large scale parallel deployment, multiple commands executed at VR would 
result in VR itself's lock time out, since the later commands would need to 
wait longer and longer for execution.

This fix would put a lock in VR resource part, and make sure every commands to 
VR would be queued before executed in VR, prevent timeout in the VR. However, 
the timeout would still possible with agent manager level, if VR resource has 
too many commands to deal with and cannot give back answer in time. But this 
timeout can be adjusted from mgmt server side, so the problem is mitigated. 



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