Commits
Antoine Pitrou authored d3c5b85e688
ARROW-3532: [Python] Emit warning when looking up for duplicate struct or schema fields Also provide C++ APIs to get all fields having a given name. Author: Antoine Pitrou <antoine@python.org> Closes #3713 from pitrou/ARROW-3532-duplicated-field-warning and squashes the following commits: d23b241a6 <Antoine Pitrou> ARROW-3532: Emit warning when looking up for duplicate struct or schema fields