Hi all, This is concerning issue ARROW-3396.
I have summarized the problem (please see if my understanding is correct), and proposed some solutions to it. Please give your valuable feedback. For details, please see: https://docs.google.com/document/d/1Y2E6RbZkUj3SwuEJrlEjaeIPmCA1SIsi9wmbJmVlB2I/edit?usp=sharing Thank you in advance. Best, Liya Fan
