Michael Park created MESOS-7633:
-----------------------------------
Summary: Prevent hierarchical roles from being allocated resources
from non-HIERARCHICAL_ROLE agents.
Key: MESOS-7633
URL: https://issues.apache.org/jira/browse/MESOS-7633
Project: Mesos
Issue Type: Task
Reporter: Michael Park
Since non-{{HIERARCHICAL_ROLE}} agents cannot handle volume creation on
hierarchical roles.
There are a couple of approaches we could have taken here.
(1) Fine-grained: Offer the resources, and reject requests to create volumes on
a hierarchical role.
(2) Coarse-grained: Don't offer the resources, require that the agent be
upgraded before used with a {{HIERARCHICAL_ROLE}} framework.
The current plan is to pursue (2). A couple of reasons for this. First is that
this is a generic behavior that can be expected for any new capability. For
example, a {{MULTI_ROLE}} framework does not get offered resources from a
non-{{MULTI_ROLE}} agent.
Another reason is there is no feedback loop for a framework when operations
fail currently. I believe that it would be more difficult to debug a situation
in which a framework's request is being silently dropped, as opposed to not
getting offered resources from the agent to begin with.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
