[jira] [Assigned] (MESOS-8222) Add resource versions to RunTaskMessage

["Benjamin Bannier (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-8222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benjamin Bannier reassigned MESOS-8222:
---------------------------------------

        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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