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https://issues.apache.org/jira/browse/MESOS-3042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marco Massenzio reassigned MESOS-3042:
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Assignee: Joris Van Remoortere (was: Artem Harutyunyan)
> Master/Allocator does not send InverseOffers to resources to be maintained
> --------------------------------------------------------------------------
>
> Key: MESOS-3042
> URL: https://issues.apache.org/jira/browse/MESOS-3042
> Project: Mesos
> Issue Type: Task
> Components: allocation, master
> Reporter: Joseph Wu
> Assignee: Joris Van Remoortere
> Labels: mesosphere
>
> Offers are currently sent from master/allocator to framework via
> ResourceOffersMessage's. InverseOffers, which are roughly equivalent to
> negative Offers, can be sent in the same package.
> In src/messages/messages.proto
> {code}
> message ResourceOffersMessage {
> repeated Offer offers = 1;
> repeated string pids = 2;
> // New field with InverseOffers
> repeated InverseOffer inverseOffers = 3;
> }
> {code}
> Sent InverseOffers can be tracked in the master's local state:
> i.e. In src/master/master.hpp:
> {code}
> struct Slave {
> ... // Existing fields.
> // Active InverseOffers on this slave.
> // Similar pattern to the "offers" field
> hashset<InverseOffer*> inverseOffers;
> }
> {code}
> One actor (master or allocator) should populate the new InverseOffers field.
> * In master (src/master/master.cpp)
> ** Master::offer is where the ResourceOffersMessage and Offer object is
> constructed.
> ** The same method could also check for maintenance and send InverseOffers.
> * In the allocator (src/master/allocator/mesos/hierarchical.hpp)
> ** HierarchicalAllocatorProcess::allocate is where slave resources are
> aggregated an sent off to the frameworks.
> ** InverseOffers (i.e. negative resources) allocation could be calculated in
> this method.
> ** A change to Master::offer (i.e. the "offerCallback") may be necessary to
> account for the negative resources.
> Possible test(s):
> * InverseOfferTest
> ** Start master, slave, framework.
> ** Accept resource offer, start task.
> ** Set maintenance schedule to the future.
> ** Check that InverseOffer(s) are sent to the framework.
> ** Decline InverseOffer.
> ** Check that more InverseOffer(s) are sent.
> ** Accept InverseOffer.
> ** Check that more InverseOffer(s) are sent.
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