Joseph Wu created MESOS-3041:
--------------------------------
Summary: Add an optional "reason" to the Decline call in the
Event/Call API
Key: MESOS-3041
URL: https://issues.apache.org/jira/browse/MESOS-3041
Project: Mesos
Issue Type: Task
Components: master
Reporter: Joseph Wu
In the Event/Call API, the Decline call is currently used by frameworks to
reject resource offers.
In the case of InverseOffers, the framework could give additional information
to the operators and/or allocator, as to why the InverseOffer is declined. i.e.
Suppose a cluster running some consensus algorithm is given an InverseOffer on
one of its nodes. It may decline saying "Too few nodes" (or, more verbosely,
"Specified InverseOffer would lower the number of active nodes below quorum").
This change requires two changes:
* include/mesos/scheduler/scheduler.proto:
{code}
message Call {
...
message Decline {
repeated OfferID offer_ids = 1;
optional Filters filters = 2;
// Add this extra string for each OfferID
// i.e. reasons[i] is for offer_ids[i]
repeated string reasons = 3;
}
...
}
{code}
* src/master/master.cpp
Change Master::decline to either store the reason, or log it.
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