[jira] [Created] (ARROW-15374) [C++][FlightRPC] Add support for alternative MemoryManagers

["David Li (Jira)" <ji...@apache.org>]

David Li created ARROW-15374:
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             Summary: [C++][FlightRPC] Add support for alternative MemoryManagers
                 Key: ARROW-15374
                 URL: https://issues.apache.org/jira/browse/ARROW-15374
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++, FlightRPC
            Reporter: David Li
            Assignee: David Li


We should add support for sending/receiving data using a non-standard allocator, given that:
 * the plan is to support UCX as a backend to Flight,
 * UCX can manage non-CPU memory,
 * the existing Device/MemoryManager API handles this case,

We should find some way to ensure we fully reflect UCX's capabilities to Flight users. Furthermore, we should integrate the MemoryManager and Flight APIs so that Flight user code should not _have_ to worry about whether their backend supports this or not. (That means that for gRPC, we should do the copy for the user.)

As part of this, we should extend the Flight benchmark to test this case so we also have a baseline.



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