DNS Error for S3 files with many columns

[jupiter]

When requesting data from files with many columns, we get:

thread 'tokio-runtime-worker' panicked at 'called `Result::unwrap()` on an `Err` value: HttpDispatch(HttpDispatchError { message: "Error during dispatch: error trying to connect: dns error: failed to lookup address information: nodename nor servname provided, or not known" })', src/s3_reader.rs:65:42

This is due to DNS throttling, which happens due to a large number of concurrent requests hitting the DNS resolver.