Hi, Maybe someone can help me with a problem I'm having. Short version of the question is: Is it possible to use dynamic reservation on statically reserved Mesos agents?
The current situation is that we have Mesos cluster which runs many frameworks (aurora, spark, cassandra) and we are developing a custom framework for stateful tasks. Our framework manages stateful tasks for many users. Currently we statically reserved our hardware which has good disks only to be used by our framework (via --resources flag on Mesos Agents). The problem we are facing is that if one stateful task fails we would like to relaunch it on the same host with the same port, cpu, disk and memory. With dynamic reservations we would put a label with task id on a reservation and on failure would just simply reuse the reserved offer. On the other hand with statically reserved Mesos agents we cannot put any labels and so we cannot distinguish offers which should have been reserved for a task and a new offer. This leaves us in the situation that if one stateful task fails and there are new stateful tasks, the new tasks can be scheduled on failed task's Mesos agent, filling it up and taking it's port, cpu and memory. -- Regards Povilas Versockas
