[jira] [Updated] (MESOS-4769) Update state endpoints to allow clients to determine how many resources for a given role have been used

["Michael Gummelt (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-4769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Gummelt updated MESOS-4769:
-----------------------------------
    Labels: mesosphere  (was: )

> Update state endpoints to allow clients to determine how many resources for a given role have been used
> -------------------------------------------------------------------------------------------------------
>
>                 Key: MESOS-4769
>                 URL: https://issues.apache.org/jira/browse/MESOS-4769
>             Project: Mesos
>          Issue Type: Task
>    Affects Versions: 0.27.1
>            Reporter: Michael Gummelt
>              Labels: mesosphere
>
> AFAICT, this is currently impossible.  Say I have a cluster with 4CPUs reserved for {{spark}} and 4CPUs unreserved, I have a framework registered as {{spark}}, and I would like to determine how many CPUs reserved for {{Spark}} have been used.  AFAIK, there are two endpoints with interesting information: {{/master/state}} and {{/master/roles}}.  Both endpoints tell me how many resources are used by the framework registered as {{spark}}, but it doesn't tell me which role those resources belong to (i.e. are they reserved or unreserved).
> A simple fix would be to update {{/master/roles}} to split out resources into "reserved" and "unreserved".  However, this will fail to solve the problem if (and hopefully when) Mesos supports multi-role frameworks.



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