https://issues.apache.org/jira/browse/ARROW-16426

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@westonpace, the build failures shows a dependency problem in some of the platforms. I'm not sure how to resolve this.

Ah, it seems MapNode had not previously ever been used outside of the compute module. file_base.cc is in the datasets module. You will need to add the appropriate exports to MapNode. This is an unfortunate process that seems to be unique to Windows. This should be as simple as...

class ARROW_EXPORT MapNode : public ExecNode {
...

Although exposing things tends to have somewhat infectious consequences. For example, I'm pretty sure you will then also need to expose AtomicCounter since it is referenced by MapNode. However, that should be about it and it makes sense to expose both of those things as they will be generally useful to anyone building ExecNode implementations outside of Arrow.

@westonpace, the R / AMD64 Windows C++ RTools 40 ucrt64 build error seems unrelated to the change. How to proceed?

I agree it is unrelated. In the future, if there are build failures and they seem unrelated feel free to just mention something like "build failures seem unrelated" and (assuming its ready) re-request review.

Benchmark runs are scheduled for baseline = d00caa9 and contender = 7bfc732. 7bfc732 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Finished ⬇️0.08% ⬆️0.04%] test-mac-arm
[Finished ⬇️0.71% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.0% ⬆️0.08%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 7bfc7320 ec2-t3-xlarge-us-east-2
[Finished] 7bfc7320 test-mac-arm
[Finished] 7bfc7320 ursa-i9-9960x
[Finished] 7bfc7320 ursa-thinkcentre-m75q
[Finished] d00caa94 ec2-t3-xlarge-us-east-2
[Finished] d00caa94 test-mac-arm
[Finished] d00caa94 ursa-i9-9960x
[Finished] d00caa94 ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java