tustvold opened a new pull request, #1803:
URL: https://github.com/apache/arrow-rs/pull/1803
# Which issue does this PR close?
Part of #1605
# Rationale for this change
I originally wanted to introduce an API that would afford clients greater
control of this, but particularly with the in-flight work to support column
indexes (#1749) and (#1191), it is unclear what exactly this interface should
look like. Rather than potentially paint us into a corner, lets keep the
interface high-level and we can introduce a lower-level API as and when desired.
# What changes are included in this PR?
This extracts an `AsyncChunkReader` which exposes an API to fetch byte
ranges. For backwards compatibility, an implementation is provided for
`AsyncRead + AsyncSeek`. This provides a fairly straightforward location for
DataFusion to plug in an object store that supports byte range fetches.
# Are there any user-facing changes?
No
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