我有这段代码,我正在使用 pyarrow Flight 在 Dremio 中执行查询:
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()
最近我开始收到此错误: E pyarrow._flight.FlightInternalError:无法在关闭之前完成写入
打电话时
bearer_token = client.authenticate_basic_token(用户名,密码,FlightCallOptions(headers = headers))
有人知道可能是什么问题吗?我不知道为什么这个错误开始出现,因为它之前就工作过。我在这里做错了什么吗?
这是我使用 PyArrow 连接到 Dremio 的代码,对于 Dremio Cloud 效果很好,希望这会有所帮助。