[GitHub] [arrow] lidavidm commented on pull request #13492: RFC: [C++][Java][FlightRPC] Substrait, transaction, cancellation for Flight SQL

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lidavidm commented on PR #13492:
URL: https://github.com/apache/arrow/pull/13492#issuecomment-1206751318

   Hmm, Windows builds fail because of a similar issue to https://github.com/apache/arrow/pull/13434 - Protobuf and DLLs don't interact well, since you can't get `protoc` to insert the `dllimport`/`dllexport` declarations correctly.
   
   The easiest thing might be to just punt on CancelQuery for now. Or else, it would have to be
   
   ```proto
   message ActionCancelQueryRequest {
     // XXX(ARROW-16902): A serialized FlightInfo   
     bytes info = 1;
   }
   ```
   
   and then rely on `FlightInfo::Deserialize`.


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