[jira] [Reopened] (YUNIKORN-2772) Scheduler restart does not preserve app start time

["Wilfred Spiegelenburg (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YUNIKORN-2772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wilfred Spiegelenburg reopened YUNIKORN-2772:
---------------------------------------------

After discussion in the community sync we have found a gap: pending allocations change the time but already allocated pods do not.

There is a second path in the code that needs the change for the create time in {{addAllocationInternal()}}

Reopening the Jira to add the second path

> Scheduler restart does not preserve app start time
> --------------------------------------------------
>
>                 Key: YUNIKORN-2772
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-2772
>             Project: Apache YuniKorn
>          Issue Type: Bug
>          Components: shim - kubernetes
>            Reporter: Mit Desai
>            Assignee: Peter Bacsko
>            Priority: Critical
>              Labels: pull-request-available
>             Fix For: 1.7.0
>
>
> Whenever the scheduler is restarted, all the applications create time is set to the current time, ignoring the original value that comes from the API server.
> Due to this, FIFO sorting can show irregularity in scheduling.
> If there is an App1 that started 2 days ago and App2 that started 1 day ago, during scheduler restart, both the apps will get almost same created time (nano seconds apart). App2 create time can be just a few nano seconds ahead of App1 and hence App2 gets priority over App1



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