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  1. Python Driver
  2. PYTHON-1449

Regular Failure to Connect

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    • Type: Icon: Bug Bug
    • Resolution: Works as Designed
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 3.6
    • Component/s: Auth, Connection Mgmt
    • Labels:
      None
    • Environment:
      M10 MongoDB Atlas server, Python 3.6.3 on ubuntu 17.10, with pymongo 3.6.0

      I'm evaluating MongoDB in general and the Atlas service in general, and am having some serious issues with reliability.

      When connecting, I periodically (but inconsistently) get an error.

      This is the usual error I get when connection fails:

      (venv) ixokai@ixobuntu:~/Projects/eyrie$ python -m eyrie.run
Starting...
Traceback (most recent call last):
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 925, in _get_socket_no_auth
    sock_info = self.sockets.pop()
KeyError: 'pop from an empty set'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/ixokai/Projects/eyrie/eyrie/run.py", line 11, in <module>
    print(us.find_one({"short_name": "shansen"}))
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/collection.py", line 1224, in find_one
    for result in cursor.limit(-1):
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 1176, in next
    if len(self.__data) or self._refresh():
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 1087, in _refresh
    self.__send_message(q)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 924, in __send_message
    **kwargs)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1026, in _send_message_with_response
    exhaust)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1037, in _reset_on_error
    return func(*args, **kwargs)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/server.py", line 85, in send_message_with_response
    with self.get_socket(all_credentials, exhaust) as sock_info:
  File "/usr/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/server.py", line 138, in get_socket
    with self.pool.get_socket(all_credentials, checkout) as sock_info:
  File "/usr/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 891, in get_socket
    sock_info = self._get_socket_no_auth()
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 928, in _get_socket_no_auth
    sock_info = self.connect()
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 857, in connect
    None))
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/network.py", line 116, in command
    reply = receive_message(sock, request_id)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/network.py", line 147, in receive_message
    _receive_data_on_socket(sock, 16))
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/network.py", line 176, in _receive_data_on_socket
    raise AutoReconnect("connection closed")
pymongo.errors.AutoReconnect: connection closed

      A few times, though, I've gotten this:

      (venv) ixokai@ixobuntu:~/Projects/eyrie$ python -m eyrie.run
Starting...
Traceback (most recent call last):
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 925, in _get_socket_no_auth
    sock_info = self.sockets.pop()
KeyError: 'pop from an empty set'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 842, in connect
    sock = _configured_socket(self.address, self.opts)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 744, in _configured_socket
    sock = _create_connection(address, options)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 728, in _create_connection
    raise err
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 721, in _create_connection
    sock.connect(sa)
socket.timeout: timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/ixokai/Projects/eyrie/eyrie/run.py", line 9, in <module>
    print(us.find_one({"short_name": "shansen"}))
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/collection.py", line 1224, in find_one
    for result in cursor.limit(-1):
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 1176, in next
    if len(self.__data) or self._refresh():
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 1087, in _refresh
    self.__send_message(q)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/cursor.py", line 924, in __send_message
    **kwargs)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1026, in _send_message_with_response
    exhaust)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1037, in _reset_on_error
    return func(*args, **kwargs)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/server.py", line 85, in send_message_with_response
    with self.get_socket(all_credentials, exhaust) as sock_info:
  File "/usr/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/server.py", line 138, in get_socket
    with self.pool.get_socket(all_credentials, checkout) as sock_info:
  File "/usr/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 891, in get_socket
    sock_info = self._get_socket_no_auth()
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 928, in _get_socket_no_auth
    sock_info = self.connect()
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 864, in connect
    _raise_connection_failure(self.address, error)
  File "/home/ixokai/Projects/eyrie/venv/lib/python3.6/site-packages/pymongo/pool.py", line 259, in _raise_connection_failure
    raise NetworkTimeout(msg)
pymongo.errors.NetworkTimeout: eyrie-apt-demo-dev-shard-00-00-ebuln.mongodb.net:27017: timed out

            Assignee:
            bernie@mongodb.com Bernie Hackett
            Reporter:
            ixokai Stephen Hansen
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: