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https://issues.apache.org/jira/browse/MESOS-7633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Park reassigned MESOS-7633:
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Assignee: Michael Park
> 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
> Assignee: 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.
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