Joris Van den Bossche created ARROW-14284:
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Summary: [C++][Python] Improve error message when trying use
SyncScanner when requiring async
Key: ARROW-14284
URL: https://issues.apache.org/jira/browse/ARROW-14284
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Joris Van den Bossche
See ARROW-14257
The current error message gives "Asynchronous scanning is not supported by
SyncScanner"
Copying the comment of [~westonpace]:
In Python it is always use_async=True. In R the scanner is hidden from the user
on dataset writes but the option there is use_async as well. In C++ the option
is UseAsync in the ScannerBuilder. How about,
"Writing datasets requires that the input scanner is configured to scan
asynchronously via the use_async or UseAsync options."
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