Major Description
Failure to update registry always aborts the registrar but don't always abort the master process.
When the registrar fails to update the registry it would abort the actor and fail all future operations. The rationale as explained here: https://github.com/apache/mesos/commit/5eaf1eb346fc2f46c852c1246bdff12a89216b60
In this event, the Master won't commit suicide until the initial
failure is processed. However, in the interim, subsequent operations
are potentially being performed against the Registrar. This could lead
to fighting between masters if a "demoted" master re-attempts to
acquire log-leadership!
However when the registrar updates is requested by an operator API (maintenance, quota update, etc) the master process doesn't shut down (a 500 error is returned to the client instead) and all subsequent operations will fail!