[jira] [Assigned] (MESOS-1086) DRF allocator should take into account past allocations when determining an ordering so frameworks are not starved.

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

     [ https://issues.apache.org/jira/browse/MESOS-1086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benjamin Hindman reassigned MESOS-1086:
---------------------------------------

    Assignee: Benjamin Hindman

https://reviews.apache.org/r/19090

> DRF allocator should take into account past allocations when determining an ordering so frameworks are not starved.
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: MESOS-1086
>                 URL: https://issues.apache.org/jira/browse/MESOS-1086
>             Project: Mesos
>          Issue Type: Bug
>          Components: master
>            Reporter: Benjamin Hindman
>            Assignee: Benjamin Hindman
>            Priority: Critical
>
> The DRF allocator (master/drf_sorter.hpp|cpp) currently only uses a framework's share to determine an ordering for allocating resources. When there are very few resources to go around it's possible that a framework will get allocated resources (making it have a dominant share larger than others), use those resources, then return those resources (making it's dominant share equal to the share of others), and then get reallocated the resources _again_ because its dominant share is equal to others. This can cause starvation for frameworks.



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