apache
Make it more clear when the data is in-memory or not?
From discussing with @willtebbutt on Slack (and e.g. https://discourse.julialang.org/t/how-well-apache-arrow-s-zero-copy-methodology-is-supported/59797) it seems like it would be helpful for users to easily see where the data is / know if it's mmap'd vs in-memory. An Arrow.Table is always a view into a byte buffer one way or another, as far as I know, but I'm not sure that's always totally clear to users, and also since Arrow.Table(filepath) generates that buffer itself, as a user you might not know if it's a view into memory on disk or if it loads the table into memory.
I think this could probably solved by a FAQ item or such, or possibly by putting something in the show method when Arrow has mmap'd the file for you.
