Django视图函数中使用多进程+multiprocessing.Manager模块使用共享变量报错

Question

问题遇到的现象和发生背景

Django 视图函数代码

def myFunc(i, l):
    l.append(i)

@api_view(['GET'])
def test_11(request):
    manager = Manager()
    temp_list = manager.list()
    for i in range(5):
        p = Process(target=myFunc, args=[i, temp_list])
        p.start()
    p.join()
    logger.error("temp_list: {}".format(temp_list))
    return CommonRespone(msg="ok")

报错信息：

2022-08-07 11:34:03,906|WARNING|basehttp.py|basehttp|"GET /test_11/ HTTP/1.1" 400 75091
Traceback (most recent call last):
  File "/root/yangt/test2/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/root/yangt/test2/lib/python3.9/site-packages/rest_framework/decorators.py", line 50, in handler
    return func(*args, **kwargs)
  File "/data/opt/cmdb-yangt/cmdb/apps/server_maintain/views/version.py", line 911, in test_11
    temp_list = manager.list()
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/managers.py", line 714, in temp
    token, exp = self._create(typeid, *args, **kwds)
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/managers.py", line 597, in _create
    conn = self._Client(self._address, authkey=self._authkey)
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/connection.py", line 513, in Client
    answer_challenge(c, authkey)
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/connection.py", line 757, in answer_challenge
    message = connection.recv_bytes(256)         # reject large message
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/connection.py", line 221, in recv_bytes
    buf = self._recv_bytes(maxlength)
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/connection.py", line 419, in _recv_bytes
    buf = self._recv(4)
  File "/data/opt/python3.9.5/lib/python3.9/multiprocessing/connection.py", line 384, in _recv
    chunk = read(handle, remaining)
BlockingIOError: [Errno 11] Resource temporarily unavailable

我的解答思路和尝试过的方法

尝试了使用 Flask 实现类似逻辑，可以正常运行：
Flask 代码：

from flask import Flask
from multiprocessing import Process, Manager

app = Flask(__name__)

def myFunc(i, l):
    l.append(i)

@app.route('/')
def hello_world():
    manager = Manager() 
    temp_list = manager.list()
    for i in range(5):
        p = Process(target=myFunc, args=[i, temp_list]) 
        p.start()
    p.join()
    print(temp_list)
    return 'hello world'

if __name__ == "__main__":
    app.run()

请求结果：

(flask) [root@dashboard01 tmp]# python hello.py 
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Serving Flask app 'hello'
 * Debug mode: off
 * Running on http://127.0.0.1:5000 (Press CTRL+C to quit)
[0, 2, 1, 4, 3]
127.0.0.1 - - [07/Aug/2022 11:47:21] "GET / HTTP/1.1" 200 -

我想知道是因为 Django 本身的原因导致无法使用 multiprocessing.Manager 模块定义共享变量，还是我的使用方式有问题？