Only Schedule Retries before Agent Shutdown (#35554)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35554
We attach a callback to our RPC send attempts that schedule a retry
upon failure. This PR only schedules the retry if the agent is running.
ghstack-source-id: 101332815
Differential Revision: D20612615
fbshipit-source-id: e1bbb3f162101bce7eb46bad512c9e5dc6d531cc
