Cell Level Encryption

[asfimport]

Cell level encryption can do finer-grained encryption than modular encryption(Parquet-1178) or file encryption. The idea is only some fields inside the column are encrypted based on a filter expression. For example, a table with column a, b, c.x, c.y, d, we can encrypt column a, c.x where d == 5 and c.y > 0.

Reporter: Xinli Shang / @shangxinli Assignee: Xinli Shang / @shangxinli

Externally tracked issue: https://docs.google.com/document/d/1PUonl9i_fVlRhUmqEmWBQJ8zesX7mlvnu3ubemT11rk/edit#heading=h.kkuoyw5u0ywe

_{Note: This issue was originally created as PARQUET-2116. Please see the migration documentation for further details.}

[Cerebus]

Is there a current status on this? The presentation at Dremio last year caught my attention, but I don't see a relevant PR. Just getting time to look into this again, and wondering what's going on.

@shangxinli @Pavitheran