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Posted to issues@yunikorn.apache.org by "Qi Zhu (Jira)" <ji...@apache.org> on 2023/11/19 08:57:00 UTC

[jira] [Assigned] (YUNIKORN-498) core should know if cluster can auto scale or not

     [ https://issues.apache.org/jira/browse/YUNIKORN-498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Qi Zhu reassigned YUNIKORN-498:
-------------------------------

    Assignee: Qi Zhu

> core should know if cluster can auto scale or not
> -------------------------------------------------
>
>                 Key: YUNIKORN-498
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-498
>             Project: Apache YuniKorn
>          Issue Type: Improvement
>          Components: core - common
>            Reporter: Wilfred Spiegelenburg
>            Assignee: Qi Zhu
>            Priority: Major
>
> For headroom calculation and max resources on a queue the core currently assumes that the cluster is always able to upscale when needed.
> However in the case that we run in an on premise cluster or in another limited setup we might not be able to upscale.
> When we check the headroom we ignore the root queue or partition size as we can autoscale. In the case that there is a gang we check the max queue size but should not include the root (partition) size unless the cluster cannot autoscale.
> Since we have no idea if we can autoscale we could make the wrong decision.



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