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https://issues.apache.org/jira/browse/MESOS-2818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jie Yu updated MESOS-2818:
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Sprint: Twitter Q2 Sprint 3
Story Points: 3
> Pass 'allocated' resources for each executor to the resource estimator.
> -----------------------------------------------------------------------
>
> Key: MESOS-2818
> URL: https://issues.apache.org/jira/browse/MESOS-2818
> Project: Mesos
> Issue Type: Task
> Reporter: Jie Yu
>
> Resource estimator obviously need this information to calculate, say the
> usage slack. Now the question is how. There are two approaches:
> 1) Pass in the allocated resources for each executor through the
> 'oversubscribable()' interface.
> 2) Let containerizer return total resources allocated for each container when
> 'usages()' are invoked.
> I would suggest to take route (1) for several reasons:
> 1) Eventually, we'll need to pass in slave's total resources to the resource
> estimator (so that RE can calculate allocation slack). There is no way that
> we can get that from containerizer. The slave's total resources keep changing
> due to dynamic reservation. So we cannot pass in the slave total resources
> during initialization.
> 2) The current implementation of usages() might skip some containers if it
> fails to get statistics for that container (not an error). This will cause
> in-complete information to the RE.
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