SuperTails opened a new issue, #1783:
URL: https://github.com/apache/arrow-rs/issues/1783
**Describe the bug**
Attempting to use `flight_data_to_arrow_batch` on flight data that does not
have any columns returns an `InvalidArgumentError("must either specify a row
count or at least one column")`.
**To reproduce**
Call `flight_data_to_arrow_batch` on a `FlightData` and `Schema` that does
not have any columns.
**Expected behavior**
Calling `flight_data_to_arrow_batch` should use the row information in the
RecordBatch header and return a valid record batch instead of returning an
error.
**Additional context**
Support for `RecordBatch`es with no columns but with a row count was already
added in #1552. `flight_data_to_arrow_batch` already has the row count
information provided as an argument. It gets read there in
`message.header_as_record_batch()`, but then the subsequent
`reader::read_record_batch` call seems to discard that info.
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