[ARROW-10460] [FlightRPC][Python] FlightRPC authentication mechanism changed and is undocumented, breaking current working code

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.0.0
• Component/s: FlightRPC, Python
• Environment: MacOS Catalina, python 3.7.4
• External issue URL: https://github.com/apache/arrow/issues/26437
• Assignee: Unassigned
• Reporter: Carlo Mazzaferro
• Created: 02/Nov/20 12:23
• Updated: 11/Jan/23 08:13
• Resolved: 01/Jul/22 15:57

Description

Authentication with FlightClient changed from version 1.0.1 to 2.0.0 and is undocumented. 

 

>>> from pyarrow import __version__

>> print(_version_)

'1.0.1'

>>> from handlers import ApiKeyClientAuthHandler  # custom handler}}
>>> from pyarrow.flight import FlightClient
>>> client = FlightClient(location="grpc+tcp://xxxxxxxxxx.com")
>>> client.authenticate(ApiKeyClientAuthHandler(api_key="xxxxx"))

>>>

 

And the exact same code in 2.0.0 breaks

 

>>> from pyarrow import __version__

>> print(_version_)

'2.0.0'

>>> from handlers import ApiKeyClientAuthHandler  # custom handler}}
>>> from pyarrow.flight import FlightClient
>>> client = FlightClient(location="grpc+tcp://xxxxxxxxxx.com")
>>> client.authenticate(ApiKeyClientAuthHandler(api_key="xxxxx"))

Traceback (most recent call last):
   File "scratch.py", line 15, in <module>
     client.authenticate(ApiKeyClientAuthHandler(api_key="xxxxxxxxxx"))
   File "pyarrow/_flight.pyx", line 1149, in pyarrow._flight.FlightClient.authenticate
   File "pyarrow/_flight.pyx", line 70, in pyarrow._flight.check_flight_status
pyarrow._flight.FlightUnavailableError: gRPC returned unavailable error, with message: failed to connect to all addresses

 

What happened?