Non-intuitive Error Message When Using HTTP with ObjectStore

[WetABQ]

Describe the bug

When attempting to use the object_store crate with an HTTP URL, the error message returned is non-intuitive. The error is caused by the object_store crate enforcing HTTPS, but the error message does not clearly indicate this. Instead, it returns a generic error message that can be confusing to users.

Error Message:

ObjectStore(Generic { store: "HTTP", source: Request { source: Reqwest { retries: 0, max_retries: 10, elapsed: 65.417µs, retry_timeout: 180s, source: reqwest::Error { kind: Builder, url: "http://127.0.0.1:3000/hits_0.parquet", source: BadScheme } } } })

To Reproduce

Set up a local HTTP server serving a Parquet (or whatever) file at http://127.0.0.1:3000/hits_0.parquet.

Use the following code snippet to attempt to register the Parquet file with a DataFusion context:

 use std::sync::Arc;
 use datafusion::prelude::{ParquetReadOptions, SessionConfig, SessionContext};
 use object_store::http::HttpBuilder;
 use url::Url;

 #[tokio::main]
 async fn main() -> datafusion::error::Result<()> {
     let mut config = SessionConfig::new();
     let ctx = SessionContext::new_with_config(config);

     let base_url = Url::parse("http://127.0.0.1:3000/").unwrap();
     let object_store = HttpBuilder::new()
           .with_url(base_url.clone())
           .build()
           .unwrap();
     ctx.register_object_store(&base_url, Arc::new(object_store));

     ctx.register_parquet(
         "hits",
         "http://127.0.0.1:3000/hits_0.parquet",
         ParquetReadOptions::default()
     ).await?;

     Ok(())
 }

Expected behavior

The error should be raised after the object store has been retrieved, and it should clearly indicate that the issue is related to the use of HTTP instead of HTTPS. A more intuitive error message would help users quickly identify and resolve the issue.

Additional context

Config Option: https://docs.rs/object_store/0.11.2/object_store/enum.ClientConfigKey.html