Alessandro Molina created ARROW-14255:
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Summary: [Python] FlightClient.do_action is a generator instead of
returning one.
Key: ARROW-14255
URL: https://issues.apache.org/jira/browse/ARROW-14255
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 5.0.0
Reporter: Alessandro Molina
Fix For: 6.0.0
According to the documentation (
https://arrow.apache.org/docs/python/generated/pyarrow.flight.FlightClient.html#pyarrow.flight.FlightClient.do_action
) I would expect to be able to invoke {{client.do_action}} and get back an
iterator. While it seems that the function is in fact a generator itself.
This makes a big difference because if it returns an iterator I expect to be
able to do {{client.do_action(...)}} and just ignore the result if I don't
care. But if it's a generator ignoring the results makes so that it actually
doesn't get invoked at all and thus that the server won't do anything.
It would make sense to make {{do_action}} return a generator instead of being a
generator itself, that would keep backward compatibility and would avoid
puzzled users that don't see their code being invoked when they do
{{client.do_action(...)}}
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