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https://issues.apache.org/jira/browse/MESOS-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Mahler updated MESOS-7682:
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Summary: Agent agent downgrade capability checking. (was: Agent downgrade
capability checking.)
> Agent agent downgrade capability checking.
> ------------------------------------------
>
> Key: MESOS-7682
> URL: https://issues.apache.org/jira/browse/MESOS-7682
> Project: Mesos
> Issue Type: Improvement
> Reporter: Benjamin Mahler
>
> It would be great if the agent could prevent a downgrade if it reaches a
> point where a capability becomes required but the downgraded agent does not
> have the capability.
> For example, consider the case that an agent starts writing refined
> reservations to disk (per the RESERVATION_REFINEMENT capability). At this
> point, the RESERVATION_REFINEMENT capability becomes required. Ideally, the
> agent persists this information into its state, so that if the agent is
> downgraded to a pre-RESERVATION_REFINEMENT state, the old agent could detect
> that a capability it does not have is required. At this point the old agent
> could refuse to start. This would prevent a "buggy" downgrade due to the old
> agent mis-reading the checkpointed resources.
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