RFC Roadmap for 2021 (core Arrow/Parquet crates)

[alamb]

Note: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-10972

Given the momentum and number of contributors involved in the Rust implementation, I think it would be useful to crowdsource a roadmap for the next few releases that we expect to release in 2021.

We have a small number of active committers on the project currently and it is hard for us to keep up with all the PRs sometimes, especially when so many different areas are being contributed to.

It would be helpful if we can co-ordinate to prioritize work for the release.

Of course, this is open source, and anyone can contribute anything at any time, but it would be nice to have some areas that we all agree are the main priorities.

I will create a PR to kick start this discussion.

[alamb]

Comment from Neville Dipale(nevi_me) @ 2020-12-24T19:57:31.556+0000:

This is a great idea, even though our time is mostly voluntary, we can still manage to guide development more structurally based on our interests and focus areas in the project.

 

On my end, my priority work is:
 * Completing the Parquet Arrow writer, including async support.
 * Catching up to the IPC format changes, including buffer compression

Everything else I pick up based on how much extra time I have.