The file system write uses the legacy Scan method which is not supported by the async scanner.  This should be addressed.  It would be useful, for example, when copying a dataset from S3 to local disk.

Reporter: Weston Pace / @westonpace
Assignee: Weston Pace / @westonpace

Related issues:

• [C++] [Dataset] FileSystemDataset::Write should use an async scan (is duplicated by)
• [C++] Remove deprecated Scanner::Scan (is depended upon by)

_{Note: This issue was originally created as ARROW-12803. Please see the migration documentation for further details.}