Can you post the code you're using to reproduce this error? If you're using subprocess.Popen (or otherwise using fork+exec) to start the C++ grpc client process, the C++ client itself cannot be interfering with the Python process. Something could be going wrong in the gRPC core fork handlers, however - you can try running with the environment variable `GRPC_ENABLE_FORK_SUPPORT=0` to disable this feature and see if it fixes the issue.
Also, in your step 5 you note that the C++ client isn't communicating with the server. If you remove the fork+exec of a C++ subprocess altogether, do you still see this intermittent exception in the Python client? Eric On Wed, Feb 20, 2019 at 6:57 AM Alex <negral...@gmail.com> wrote: > I should add that the Python client application which owns the Python grpc > client is the one that runs the C++ grpc client as a subprocess in case > that makes a difference. > > -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To post to this group, send email to grpc-io@googlegroups.com. > Visit this group at https://groups.google.com/group/grpc-io. > To view this discussion on the web visit > https://groups.google.com/d/msgid/grpc-io/b323fac3-978b-47c1-b1fa-555c2f62b544%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/b323fac3-978b-47c1-b1fa-555c2f62b544%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CALUXJ7gd6JU7FojFs_uQOevz1h69_k2GMoLHMM6jJJ6Yy9W28Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
