Fashion MNIST not creating processed directory when downloading

[le1nux]

🐛 Describe the bug

Normally, when downloading the fashion-mnist dataset, two folders are created, namely raw and processed.
In the latest torchvision version (0.10.1), only raw is being created and no error is being raised.

Steps to reproduce:

import torchvision
torchvision.datasets.FashionMNIST(root=".", download=True, train=True)

Versions

I verified this issue on two different machines.
Version 0.9.1 provides the two folders, whereas 0.10.1 does not.

[LuigiSimeone]

I have the same issue with:
python 3.8.10
torch version 1.10.1
torchvision 0.11.2

[NicolasHug]

I assume this comes from #3420. IIUC we now create the "processed" files on the fly.

@le1nux @LuigiSimeone could you please detail why you need the processed subfolder?

CC @pmeier