我有一个长期运行的Python脚本，可以将文档从MongoDB上传到GC存储。文档首先导出到本地csv文件，并且该csv文件上载到GC存储。
在出错之前，脚本运行了大约10个小时，没有任何问题。是什么导致了这个错误？
我使用GCS的代码：
client = storage.Client.from_service_account_json(KEY_JSON)
def upload_file(filepath):
bucket = client.get_bucket(BUCKET_NAME)
blob = bucket.blob(filepath)
blob.upload_from_filename(filepath)
logging.info("Uploaded file {} to GCS.", str(filepath))
堆栈追踪：
Traceback (most recent call last):
File "/home/leonz/.local/lib/python3.5/site-packages/urllib3/connectionpool.py", line 601, in urlopen
chunked=chunked)
File "/home/leonz/.local/lib/python3.5/site-packages/urllib3/connectionpool.py", line 357, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib/python3.5/http/client.py", line 1107, in request
self._send_request(method, url, body, headers)
File "/usr/lib/python3.5/http/client.py", line 1152, in _send_request
self.endheaders(body)
File "/usr/lib/python3.5/http/client.py", line 1103, in endheaders
self._send_output(message_body)
File "/usr/lib/python3.5/http/client.py", line 936, in _send_output
self.send(message_body)
File "/usr/lib/python3.5/http/client.py", line 908, in send
self.sock.sendall(data)
File "/usr/lib/python3.5/ssl.py", line 899, in sendall
v = self.send(data[count:])
File "/usr/lib/python3.5/ssl.py", line 869, in send
return self._sslobj.write(data)
File "/usr/lib/python3.5/ssl.py", line 594, in write
return self._sslobj.write(data)
BrokenPipeError: [Errno 32] Broken pipe