A few months ago, there was a dev list thread on whether libprocess should provide ordered delivery [1]. The consensus then was that libprocess doesn't provide ordered delivery in a few corner cases, but that we should fix that behavior to guarantee ordered (but unreliable) message delivery.
Please see this design doc for a proposal of how to achieve this: https://docs.google.com/document/d/1oqv42-GYXfh0TsyXGCBhxakXw8ckXMCnEb0T-ydEyYM/edit# Comments welcome. Thanks, Neil [1] https://mail-archives.apache.org/mod_mbox/mesos-dev/201511.mbox/%3CCAOW5sYaANyaRD-Mbk7E_VsWwF=xrtcvhszuvmunj4sq8jdt...@mail.gmail.com%3E
