Carlo Mazzaferro created ARROW-10460:
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Summary: FlightRPC authentication mechanism changed and is
undocumented, breaking current working code
Key: ARROW-10460
URL: https://issues.apache.org/jira/browse/ARROW-10460
Project: Apache Arrow
Issue Type: Bug
Components: FlightRPC, Python
Affects Versions: 2.0.0
Environment: MacOS Catalina, python 3.7.4
Reporter: Carlo Mazzaferro
Fix For: 1.0.1
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"))
```
What happened?
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