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From "Maxim Khutornenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AURORA-802) Quota is not checked correctly in startJobUpdate
Date Tue, 07 Oct 2014 16:35:35 GMT

    [ https://issues.apache.org/jira/browse/AURORA-802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14162081#comment-14162081
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Maxim Khutornenko commented on AURORA-802:
------------------------------------------

Let's say there is a quota of 60CPU and a job update touching 10 existing instances of 5 CPU
each. That would account for a total of 50CPU. Once it's rolled into a IResourceAggregate
it would represent an anonymized resource consumption of 50CPU without any reference to the
existing instances being touched. Next, the IResouceAggregate(50, _, _) is passed into the
QuotaManager.checkQuota() where there is no way to match the updated instances against the
existing ones. The update is not yet in the store, hence it's not pulled by the existing update
filter. End result: 50(existing) + 50(updated) > 60 allocated. 

> Quota is not checked correctly in startJobUpdate
> ------------------------------------------------
>
>                 Key: AURORA-802
>                 URL: https://issues.apache.org/jira/browse/AURORA-802
>             Project: Aurora
>          Issue Type: Bug
>          Components: Scheduler
>            Reporter: Maxim Khutornenko
>            Assignee: Maxim Khutornenko
>            Priority: Blocker
>
> The prod resources represented by the IJobUpdate are rolled up into IResourceAggregate
and thus anonymized before being passed into the QuotaManager. This makes QuotaManager treat
update resources as purely additive leading to double counting.



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