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From "Klaus Ma (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MESOS-4923) Add a new sorter for revocable resources in allocator
Date Sun, 13 Mar 2016 07:30:33 GMT

     [ https://issues.apache.org/jira/browse/MESOS-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Klaus Ma reassigned MESOS-4923:
-------------------------------

    Assignee: Klaus Ma

> Add a new sorter for revocable resources in allocator
> -----------------------------------------------------
>
>                 Key: MESOS-4923
>                 URL: https://issues.apache.org/jira/browse/MESOS-4923
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Guangya Liu
>            Assignee: Klaus Ma
>
> The current logic of roleSorter is that when it do role sorter, the resources in it will
include both regular resources and revocable resources, and this may not accurate for some
cases, take the following case as an instance:
> 1) framework1 and framework2. 
> 2) framework1 got 1 reserved cpu and 9 revocable cpu. cpu(r1):1;cpu(*){REV}:9
> 3) framework2 got 9 reserved cpus: cpu(r1):9
> When allocator allocate resources in next cycle, framework2 will be handled first as
it has less SCALAR resources than framework1, but this may not be right for some cases as
framework1 is using only 1 reserved resources and other resources are revocable which can
be easily got evicted.
> A proposal here is introducing a new sorter for revocable resources so as to distinguish
the sorter for regular resources and revocable resources. To the built in allocator, the logic
would be as this:
> 1) Quota Role Sorter
> 2) non-revocable Role Sorter
> 3) Revocable Role Sorter



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