Ah, right. I haven't written up the last set of ADBC proposals yet. I'll do 
that in the next day or two.

On Tue, Feb 14, 2023, at 17:38, Will Jones wrote:
> Hi David,
>
> The proposals in the Flight/Flight SQL document look excellent. As I've
> been looking at ADBC I've been wondering about polling / async execution,
> cancellation, and progress indicators. Glad to see those in the Flight
> document, but where are they in the ADBC issues? Do they still need to be
> created?
>
> Best,
>
> Will Jones
>
> On Tue, Feb 14, 2023 at 12:58 PM David Li <lidav...@apache.org> wrote:
>
>> Hello,
>>
>> I would like to submit some Flight RPC and Flight SQL enhancements for
>> discussion. They cover the following:
>>
>> - Executing 'queries' in a retryable, nonblocking way
>> - Handling ordered result sets
>> - Handling expiration of/re-reading result sets
>>
>> In addition, there are corresponding proposals for ADBC in anticipation of
>> these features, James's catalogs proposal for Flight SQL, and other
>> feedback.
>>
>> The Flight proposals are described in this document [1]. It should be open
>> for comments.
>> The ADBC proposals are filed as individual issues in this milestone [2].
>>
>> Any feedback is much appreciated. There are not yet prototype
>> implementations, but if there is a rough consensus then I can begin on that.
>>
>> [1]:
>> https://docs.google.com/document/d/1jhPyPZSOo2iy0LqIJVUs9KWPyFULVFJXTILDfkadx2g/edit?usp=sharing
>> [2]: https://github.com/apache/arrow-adbc/milestone/3
>>
>> Thanks,
>> David
>>

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