Anand Mazumdar created MESOS-5565:
-------------------------------------

             Summary: Add logging when Offer::Operation::Launch message has no 
tasks.
                 Key: MESOS-5565
                 URL: https://issues.apache.org/jira/browse/MESOS-5565
             Project: Mesos
          Issue Type: Improvement
            Reporter: Anand Mazumdar
            Priority: Minor


Currently, when a {{Offer::Accept::Launch}} message has no tasks specified, 
Mesos would treat such requests as implicitly declining all offers. This can be 
very counter-intuitive for framework developers since we do not have any 
logging on the Master around this behavior. It would be good to add some 
logging on the master to apprise the framework developers that all the offers 
have been implicitly declined.

{code}
if (operation.type() == Offer::Operation::LAUNCH) {
      if (operation.launch().task_infos().size() > 0) {
        ++metrics->messages_launch_tasks;
      } else {
        ++metrics->messages_decline_offers;
      }
    }
}
{code}



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