Giovanni Matteo Fumarola reassigned YARN-4473:

    Assignee: Giovanni Matteo Fumarola  (was: Marco Rabozzi)

> Add version information for the application and the application attempts
> ------------------------------------------------------------------------
>                 Key: YARN-4473
>                 URL: https://issues.apache.org/jira/browse/YARN-4473
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Giovanni Matteo Fumarola
>            Assignee: Giovanni Matteo Fumarola
> In order to allow to upgrade an application master across different attempts, 
> we need to keep track of different attempts versions and provide a mean to 
> temporarily store the upgrade information until the upgrade completes.
> Concretely we would add:
> - A version identifier for each attempt
> - A temporary upgrade context for each application

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