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https://issues.apache.org/jira/browse/MESOS-3765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965213#comment-14965213
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Alexander Rukletsov commented on MESOS-3765:
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{quote}
There might be problems that the master/allocator do not know the exact
resource request of the framework, so it seems difficult to let
master/allocator satisfy the request of the framework
{quote}
But this is true for the status quo, right? Currently the allocator does not
take into consideration frameworks resource wishes, if any. This ticket
proposes to make the "allocation chunk" adjustable. IIUC, your proposal is to
implement {{requestResources()}}, which is in my opinion is a separate
discussion. Also note that a framework may hoard resources, which means having
multiple smaller chunks should not be a big problem.
> Make offer size adjustable (granularity)
> ----------------------------------------
>
> Key: MESOS-3765
> URL: https://issues.apache.org/jira/browse/MESOS-3765
> Project: Mesos
> Issue Type: Improvement
> Components: allocation
> Reporter: Alexander Rukletsov
>
> The built-in allocator performs "coarse-grained" allocation, meaning that it
> always allocates the entire remaining agent resources to a single framework.
> This may heavily impact allocation fairness in some cases, for example in
> presence of numerous greedy frameworks and a small number of powerful agents.
> A possible solution would be to allow operators explicitly specify
> granularity via allocator flags. While this can be tricky for non-standard
> resources, it's pretty straightforward for {{cpus}} and {{mem}}.
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