pytorch

b894dc06 - [Pytorch] Propagate errors in clearAndWaitForOutstandingRpcsAsync. (#32952)

[Pytorch] Propagate errors in clearAndWaitForOutstandingRpcsAsync. (#32952) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/32952 When the Async() version of clearAndWaitForOutstandingRpcs() was written, we didn't yet have the generic Future<T> class, and hadn't worked out our error model fully. This change fixes that method to properly propagate the first encountered error to the future, using a bool+CAS. ghstack-source-id: 97665749 Test Plan: existing test coverage, buck test mode/dev-nosan caffe2/test/... Differential Revision: D19710337 fbshipit-source-id: 66ce5593a94a16ea624930dbb9409917ef5cfd5d