``Internal structure supports random access and slicing from the middle. This also means that you can read a large file chunk by chunk without having to pull the whole thing into memory.'' https://ursalabs.org/blog/2020-feather-v2/
For a compressed v2 file, can I decompress just one column of a batch in the middle, or is the entire batch with all of its columns compressed as a unit? Unfortunately reader.get_batch(i) seems like it is doing a lot of work. Like maybe decompressing all the columns? Thanks, John