David Li created ARROW-4213:
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Summary: [Flight] C++ and Java implementations are incompatible
Key: ARROW-4213
URL: https://issues.apache.org/jira/browse/ARROW-4213
Project: Apache Arrow
Issue Type: Bug
Components: FlightRPC
Reporter: David Li
A C++ client cannot request streams from a Java service, nor can it decode the
schema from GetFlightInfo.
Schema: in Java, GetFlightInfo encodes the schema directly via flatbuffers. C++
expects it to be encoded as an IPC message. This isn't a problem in Java as a
method exists to decode such schemas, but in C++ the API for reading such a
schema isn't really exposed. I'm willing to submit a patch for this, but it's
not clear to me which scheme is preferred.
Streams: in Java, DoGet starts with an ArrowMessage containing a schema. C++
does not expect this and segfaults when it tries to decode the message as a
record batch. Based on the presentations I've seen, I think C++ is in the wrong
here; I have a patch to fix this that I could clean up and submit.
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