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https://issues.apache.org/jira/browse/MESOS-4339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15093812#comment-15093812
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Fan Du commented on MESOS-4339:
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bq. since all the weights inside a role are identical, right?
for current implementation, yes.
it will behave just as weighted role if we add weight when adding new framework.
My understanding about current allocation behavior is a triple iteration
as following:
[HierarchicalAllocatorProcess::allocate|https://github.com/apache/mesos/blob/master/src/master/allocator/mesos/hierarchical.cpp#L1254]
* Foreach Slave in the Slaves Vector
** Foreach Role sorted by rolesorter with role weights
*** Foreach Framework sorted by frameworksorter with identical weights within
the same role
The intention of this ticket is enable Framework sorted by weights, i.e. the
last iteration. I　think this is where we saw differently.
Please correct me if I missed somewhere else.
bq. Also, currently frameworks can only have a single role.
Yes, but temporally.
It will be changed by
[MESOS-1763|https://issues.apache.org/jira/browse/MESOS-1763]
> Add weight support for framework sorter
> ---------------------------------------
>
> Key: MESOS-4339
> URL: https://issues.apache.org/jira/browse/MESOS-4339
> Project: Mesos
> Issue Type: Improvement
> Components: allocation
> Reporter: Fan Du
>
> Current framework sorter doesn't take into account of weights when sorting
> framework belonging to a particular role, i.e., all frameworks has equal
> weights as 1. Considering the role weight is controlled by the operator,
> enable the framework weight does not impact the role level allocation
> decision from any greedy frameworks, but it will be beneficial to some
> framework who could get more resources within a specific role.
> The framework weight will come from message FrameworkInfo when it got
> registered, and FrameworkSorters will "add" framework with weight,
> this will eventually result a weighted framework sorting flow when master
> make the finally allocation decision.
> Please review this ticket which I will work on if it's considered acceptable.
> Thanks a lot.
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