ekm0d opened a new issue, #38496:
URL: https://github.com/apache/arrow/issues/38496

   ### Describe the usage question you have. Please include as many useful 
details as  possible.
   
   
   I have this code t hat I'm using to  execute queries in Dremio using pyarrow 
flight:
   ```
   class DremioConnector:
       env: str
       auth_token: str
   
       def __init__(self, env: str,  auth_token: str):
           self.env = env
           self.auth_token = auth_token
   
       def get_dremio_client(self):
           dremio_url = get_url_from_template(DREMIO_URL, self.env)
   
           return FlightClient(f"grpc+tls://{dremio_url}:*****", 
tls_root_certs=get_cert(),
                               middleware=[DremioClientAuthMiddlewareFactory(), 
CookieMiddlewareFactory()], **{}, )
   
       def get_dremio_credentials(self):
          
           ...
           ...
   
           return username, password
   
       def __create_flight_call_options(self, username: str, password: str, 
client: FlightClient) -> FlightCallOptions:
           headers: list[Any] = []
   
           bearer_token = client.authenticate_basic_token(username, password, 
FlightCallOptions(headers=headers))
           headers.append(bearer_token)
           return FlightCallOptions(headers=headers)
   
       def run_query(self, query: str, username: str, password: str, client: 
FlightClient) -> FlightStreamReader:
           flight_desc = FlightDescriptor.for_command(query)
           flight_info = client.get_flight_info(flight_desc, 
self.__create_flight_call_options(username, password, client))
           reader = client.do_get(flight_info.endpoints[0].ticket, 
self.__create_flight_call_options(username, password, client))
           return reader
   
   
   connector = DremioConnector('env', "auth_token")
   
   dremio_client = connector.get_dremio_client()
   ```
   
   recently I've started getting this error:
   ***E   pyarrow._flight.FlightInternalError: Could not finish writing before 
closing***
   
   when calling 
   
   *bearer_token = client.authenticate_basic_token(username, password, 
FlightCallOptions(headers=headers))*
   
   Does anyone know what might be the issue? I have no idea why this error 
started popping up, since it was working before. Am I doing something wrong 
here?
   
   ### Component(s)
   
   Python


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