use of 'az' as a shorter version of 'abfs`

[raybellwaves]

This is more of a discussion than a features request.

Looking at known_implementations there are gcs and gs which both point to gcsfs.GCSFileSystem. Could az be created as a shorter version of abfs?

• az is common with Azure CLI syntax e.g. https://docs.microsoft.com/en-us/azure/storage/common/storage-use-azcopy-v10#run-azcopy.
• As someone who is very lazy I prefer two key strokes instead of four.

Caveats

Unlike gs and s3, Azure has two classes (adlfs.AzureDatalakeFileSystem and adlfs.AzureBlobFileSystem). I imagine you can't use az for both classes.

Proposed solution

Use az as a shortcut for 'abfs': {'class': 'adlfs.AzureBlobFileSystem'}. Given this is for the latest version of storage (Azure Datalake Gen2 and Azure Blob Storage). In addition my 50 % reduction in key strokes motivation doesn't apply to adl (Azure Datalake Gen1).

If you prefer me to open at https://github.com/dask/adlfs I will do so.

[martindurant]

az is common with Azure CLI syntax

This is a good enough reason for me; but yes, please ask on the adlfs repo, to poll for preferences.

Note that at some point I really want to implement an entrypoints method for packages to declare the fsspec drivers they contain, so that the protocol string is listed in one place only. However that wouldn't solve the case where a protocol driver is not installed and the user could do with a nice message telling them whet to do about it.