coordinator: Fix Goroutine leaks
This MR fixes most Goroutine leaks we have in TestCoordinator_grpcErrorHandling
. Maybe this'll fix the current flakiness, maybe not -- I wasn't able to reproduce it in the first place.
This MR fixes most Goroutine leaks we have in TestCoordinator_grpcErrorHandling
. Maybe this'll fix the current flakiness, maybe not -- I wasn't able to reproduce it in the first place.