Commits

Wes McKinney authored 8152916386a
ARROW-3894: [C++] Ensure that IPC file is properly initialized even if no record batches are written Without invoking `Start()`, the file cannot be read Author: Wes McKinney <wesm+git@apache.org> Closes #3095 from wesm/ARROW-3894 and squashes the following commits: 5fc65282d <Wes McKinney> Also compare schemas 1074a690a <Wes McKinney> Ensure that IPC file is properly initialized even if no record batches are written