Removed synchronous readahead from arrow-10183 PR#3

Merged

westonpace merged 11 commits intofeature/arrow-10183-2from

feature/readahead-to-async

Feb 1, 2021

Commits on Jan 30, 2021

Quick experiment to see if this valgrind complaint has anything to do with python bug
westonpace
committed
Revert "Quick experiment to see if this valgrind complaint has anything to do with python bug"
westonpace
committed

Commits on Jan 31, 2021

Reproduced segmentation fault from python. Put in a fix.
westonpace
committed

Commits on Feb 1, 2021