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https://issues.apache.org/jira/browse/MESOS-5285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16730626#comment-16730626
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longfei commented on MESOS-5285:
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+1 for this.
Actually, we want a "dynamic updating agent's resources" feature.
> Allow agent to periodically collect dynamic attributes
> ------------------------------------------------------
>
> Key: MESOS-5285
> URL: https://issues.apache.org/jira/browse/MESOS-5285
> Project: Mesos
> Issue Type: Improvement
> Components: agent
> Reporter: Qian Zhang
> Assignee: Qian Zhang
> Priority: Major
>
> The user story is, framework may want to schedule its tasks based on some
> dynamically changed attributes (e.g., CPU utilization) of agent. For example,
> framework receives 3 offers and each offer is corresponding to an agent, and
> each agent's CPU utilization is different, framework may want to launch a
> task on the agent with lowest CPU utilization.
> Currently, agent will send its resources and attributes to master only on
> startup, and will not update it afterward. To support the above user story,
> we may need to introduce a new mechanism to agent for periodically update its
> dynamically changed attributes to master. There is already a hook in agent:
> {{Hook::slaveAttributesDecorator()}}, but this hook will only be called on
> agent startup, we may need to enhance it to make it called periodically, or
> introduce a new periodical hook mechanism. And we may also need to introduce
> a new message between agent and master such agent can send the latest
> attributes collected by the hook to master.
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