Benjamin Mahler created MESOS-3426:
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Summary: process::collect and process::await do not perform
discard propagation.
Key: MESOS-3426
URL: https://issues.apache.org/jira/browse/MESOS-3426
Project: Mesos
Issue Type: Bug
Components: libprocess
Reporter: Benjamin Mahler
When aggregating futures with collect, one may discard the outer future:
{code}
Promise<int> p1;
Promise<string> p2;
Future<int, string> collect = process::collect(p1.future(), p2.future());
collect.discard();
// collect will transition to DISCARDED
// However, p{1,2}.future().hasDiscard() remains false
// as there is no discard propagation!
{code}
Discard requests should propagate down into the inner futures being collected.
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