damooo opened a new issue, #458:
URL: https://github.com/apache/arrow-rs-object-store/issues/458
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
Currently `Content-Type` is not included in object metadata. It is instead
available in `Attributes` only. But the `ListResult` only includes
`ObjectMetadata` structs. Most of object stores return `Content-Type` in list
metadata. That is imperative to show a list ui with proper mime-type, etc. As
that information is not propagated by `object_store` interface in `ListResult`,
it curtails many use cases.
**Describe the solution you'd like**
Include `content_type: Option<String>` like field in `ObjectMetadata`, and
populate it during construction of `ListResult`. For backends that doesn't have
notion of content-type, we can have populate with `None`.
**Describe alternatives you've considered**
Make seperate request for full metadata. This have issue with listing, as we
have to make O(n) requests for a list with `n` items, where as all modern
object-stores directly provides `content-type` in list result.
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