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Posted to dev@yunikorn.apache.org by "Wilfred Spiegelenburg (Jira)" <ji...@apache.org> on 2023/03/14 02:26:00 UTC
[jira] [Resolved] (YUNIKORN-1559) rethink QOS BestEffort pod scheduling
[ https://issues.apache.org/jira/browse/YUNIKORN-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wilfred Spiegelenburg resolved YUNIKORN-1559.
---------------------------------------------
Fix Version/s: 1.3.0
Resolution: Implemented
This will be fixed as part of the changes for YUNIKORN-1632
> 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
> Fix For: 1.3.0
>
>
> 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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