Commits
Weston Pace authored and David Li committed f88a00dfa47
ARROW-12386: [C++] Support file parallelism in AsyncScanner This PR adds file parallelism (with appropriate file readahead limits) into the async scanner. ~~**DRAFT**: This PR depends on ARROW-12289 and so will remain in the draft state until the parent is merged.~~ Closes #10076 from westonpace/feature/ARROW-12386--c-support-file-parallelism-in-asyncscanner Authored-by: Weston Pace <weston.pace@gmail.com> Signed-off-by: David Li <li.davidm96@gmail.com>