What version of gRPC and what language are you using?
grpc 1.13.0 with python 3.6.5
What operating system (Linux, Windows, …) and version?
CentOS 7 (Linux 3.10.0-862.3.2.el7.x86_64)
What runtime / compiler are you using (e.g. python version or version of gcc)
CPython 3.6.5
What did you do?
server = grpc.server(futures.ProcessPoolExecutor(max_workers=4))
service_pb2_grpc.add_FindPortServicer_to_server(FindPort(), server)
server.add_insecure_port('[::]:' + port)
server.start()
What did you expect to see?
Based on doc https://github.com/grpc/grpc/blob/master/doc/fork_support.md
gRPC server should run on 4 processes
What did you see instead?
Server crash
8156 tcp_server_posix.cc:210] Failed accept4: Invalid argument
Traceback (most recent call last):
File "/usr/lib64/python3.6/multiprocessing/queues.py", line 234, in _feed
obj = _ForkingPickler.dumps(obj)
File "/usr/lib64/python3.6/multiprocessing/reduction.py", line 52, in dumps
cls(buf, protocol).dump(obj)
File "stringsource", line 2, in grpc._cython.cygrpc.RequestCallEvent.__reduce_cython__
TypeError: no default __reduce__ due to non-trivial __cinit__
Make sure you include information that can help us debug (full error message, exception listing, stack trace, logs).
Anything else we should know about your project / environment?
What version of gRPC and what language are you using?
grpc 1.13.0 with python 3.6.5
What operating system (Linux, Windows, …) and version?
CentOS 7 (Linux 3.10.0-862.3.2.el7.x86_64)
What runtime / compiler are you using (e.g. python version or version of gcc)
CPython 3.6.5
What did you do?
What did you expect to see?
Based on doc https://github.com/grpc/grpc/blob/master/doc/fork_support.md
gRPC server should run on 4 processes
What did you see instead?
Server crash
Make sure you include information that can help us debug (full error message, exception listing, stack trace, logs).
Anything else we should know about your project / environment?