Michael Park created MESOS-7922:
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             Summary: Fix communication between old masters and new agents.
                 Key: MESOS-7922
                 URL: https://issues.apache.org/jira/browse/MESOS-7922
             Project: Mesos
          Issue Type: Bug
          Components: agent, master
            Reporter: Michael Park
            Assignee: Michael Park


For re-registration, agents currently send the resources in tasks
and executors to the master in the "post-reservation-refinement" format,
which is incompatible for pre-1.4 masters. We should change the agent
such that it always downgrades the resources to
the "pre-reservation-refinement" format, and the master unconditionally
upgrade the resources to "post-reservation-refinement" format.



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