Details
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Task
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Status: Resolved
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Major
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Resolution: Fixed
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Description
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.