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https://issues.apache.org/jira/browse/MESOS-8222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Bannier reassigned MESOS-8222:
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Assignee: Benjamin Bannier
Sprint: Mesosphere Sprint 69
Story Points: 3
> Add resource versions to RunTaskMessage
> ---------------------------------------
>
> Key: MESOS-8222
> URL: https://issues.apache.org/jira/browse/MESOS-8222
> Project: Mesos
> Issue Type: Task
> Components: agent, master
> Reporter: Benjamin Bannier
> Assignee: Benjamin Bannier
> Labels: mesosphere
>
> To support speculative application of certain offer operations we have added
> resource versions to offer operation messages. This permits checking
> compatibility of master and agent state before applying operations.
> Launch operations are not modelled with offer operation messages, but instead
> with {{RunTaskMessage}}. In order to provide the same consistency guarantees
> we need to add resource versions to {{RunTaskMessage}} as well. Otherwise we
> would only rely on resource containment checks in the agent to catch
> inconsistencies; these can be unreliable as there is no guarantee that the
> matched agent resource is unique (e.g., with two {{RESERVE}} operations on
> similar resorces triggered on the same agent and one of these failing, the
> other succeeding, we would end up potentially sending one framework a success
> status and the other a failed one, but would not do anything the make sure
> the speculative operation application matches the resources belonging to the
> sent offer operation status update).
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