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Posted to issues@yunikorn.apache.org by "Qi Zhu (Jira)" <ji...@apache.org> on 2023/02/06 04:17:00 UTC

[jira] [Assigned] (YUNIKORN-1559) rethink QOS BestEffort pod scheduling

     [ https://issues.apache.org/jira/browse/YUNIKORN-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Qi Zhu reassigned YUNIKORN-1559:
--------------------------------

    Assignee: Qi Zhu

> rethink QOS BestEffort pod scheduling
> -------------------------------------
>
>                 Key: YUNIKORN-1559
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-1559
>             Project: Apache YuniKorn
>          Issue Type: Improvement
>          Components: core - scheduler, shim - kubernetes
>            Reporter: Wilfred Spiegelenburg
>            Assignee: Qi Zhu
>            Priority: Major
>
> The best effort pods on K8s do not request resources. The default scheduler will just dump them on a node and hope for the best.
> In YuniKorn we need resources to schedule a pod. We reject a pod without a request set. As a default we assign 1M memory to the pod to make sure it gets scheduled. 1 byte would be better, need to rethink how we do this.
> This also affects other BestEffort pod resource calculations
>  * init containers
>  * pod overhead 



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