Hey all, I'm working on a project that has a Java arrow flight server and has a pyarrow client, both version 1.0.0. I've been trying to get richer errors back to the python client instead of the generic "grpc error ...".
I see that the spec explicitly doesn't try to define metadata: https://arrow.apache.org/docs/format/Flight.html#error-handling, but I think it would certainly be useful to have them work together. It appears that the Java implementation doesn't seem to send the ErrorFlightMetadata and the C++ code has its own way of best effort extracting of additional metadata from the response https://github.com/apache/arrow/blob/master/cpp/src/arrow/flight/internal.cc#L86 As of now, I'm just manually making the grpc metadata/exception so that pyarrow understands it but I'm curious if this is a problem others have run into / if I'm doing something silly. Similarly, I am wondering if this is something that requires cross-language definition - I'm a little unclear on the divide between what is considered a part of the Flight spec v.s. implementation specific. Happy to help if there is some follow up work here. Thanks! Pat
