This seems like a reasonable thing to support and showed up as a question on the user mailing list (through some sort of python code).

Reporter: Micah Kornfield / @emkornfield

Related issues:

• [C++] C++ array kernels framework and execution buildout (umbrella issue) (relates to)
• [Python] Error casting decimal(38, 4) to int64 (is superceded by)

_{Note: This issue was originally created as ARROW-6990. Please see the migration documentation for further details.}