Don't `ensure_table_uri` when creating a table `with_log_store`

[gruuya]

Description

Currently when a CreateBuilder is provided with a log store, it will try to create a URL from it's root (via ensure_table_uri), and then re-convert that to a String

delta-rs/crates/deltalake-core/src/operations/create.rs

Lines 222 to 226 in 9264ede

	let (storage_url, table) = if let Some(log_store) = self.log_store {
	(
	ensure_table_uri(log_store.root_uri())?.as_str().to_string(),
	DeltaTable::new(log_store, Default::default()),
	)

Besides potentially create missing dirs in the case of local FS, I don't think this round trip is actually needed in other cases (e.g. cloud URLs).

The issue this leads to for us is that ensure_table_uri in turn calls resolve_uri_type, which errors out if the URL scheme is not for one of the registered object store factories.

Use Case

I'd like to be able to use with_log_store on the CreateBuilder without having to register an object store factory beforehand.

In other words I'd like to be able to re-use the object/log store that I keep an Arc to without re-creating one from scratch every time.

Related Issue(s)

[gruuya]

I guess one resolution to this would be to have my ObjectStoreFactory just return the pre-configured ones according to the URL, which is also fine.

[rtyler]

@gruuya I see you're following main closely 😆 Are you working on a different storage integration, or just concerned with the goofy file creation behavior in core here?

[gruuya]

I see you're following main closely

Yeah, pretty nice to see the pace of development here, kudos :)

Are you working on a different storage integration, or just concerned with the goofy file creation behavior in core here?

I was mostly confused by how previously I had an object/log store instance that I'd supply to the CreateBuilder and be done with it, whereas now I need to register the factory as well.

Come to think of it, this mechanism not only makes sense broadly speaking but it's a pretty good idea actually, given that I've been contemplating how to introduce dynamic object/log store creation down the road.

Sorry for the noise and thanks!