[jira] [Created] (MESOS-5525) Allow schedulers to decide whether to consume resources as revocable or non-revocable.

["Benjamin Mahler (JIRA)" <ji...@apache.org>]

Benjamin Mahler created MESOS-5525:
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             Summary: Allow schedulers to decide whether to consume resources as revocable or non-revocable.
                 Key: MESOS-5525
                 URL: https://issues.apache.org/jira/browse/MESOS-5525
             Project: Mesos
          Issue Type: Epic
          Components: framework api, allocation
            Reporter: Benjamin Mahler


The idea here is that although some resources may only be consumed in a revocable manner (e.g. oversubscribed resources, resources from "spot instances", etc), other resources may be consumed in a non-revocable manner (e.g. dedicated instance, on-premise machine).

However, a scheduler may wish to consume these non-revocable resources in a revocable manner. For example, if the scheduler has quota for non-revocable resources it may want not want to use its quota for a particular task and may wish to launch it in a revocable manner out of its fair share. See: 

In order to support this, we should adjust the meaning of revocable and non-revocable resources in order to allow schedulers to decide how to consume them. The scheduler could choose to consume non-revocable resources in a revocable manner in order to use its fair share of revocable resources rather than its quota.



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