better error handling around high scale failures
better error handling around high scale failures

Test Plan: run test

Reviewers: zen-dog, jenkins, jeschkies

Reviewed By: jeschkies

Subscribers: marathon-team

Differential Revision: https://phabricator.mesosphere.com/D493

guenter/marathon,Caerostris/marathon,Caerostris/marathon,natemurthy/marathon,guenter/marathon,natemurthy/marathon,gsantovena/marathon,mesosphere/marathon,gsantovena/marathon,janisz/marathon,Caerostris/marathon,natemurthy/marathon,meln1k/marathon,janisz/marathon,janisz/marathon,meln1k/marathon,janisz/marathon,mesosphere/marathon,guenter/marathon,meln1k/marathon,guenter/marathon,Caerostris/marathon,mesosphere/marathon,guenter/marathon,meln1k/marathon,janisz/marathon,gsantovena/marathon,gsantovena/marathon,meln1k/marathon,gsantovena/marathon,Caerostris/marathon,mesosphere/marathon,mesosphere/marathon