Commits

Wes McKinney authored 4e4435ecc4e
ARROW-424: [C++] Make ReadAt, Write HDFS functions threadsafe This also fixes the HDFS test suite to actually use libhdfs3 (it was not by accident) Author: Wes McKinney <wes.mckinney@twosigma.com> Closes #712 from wesm/ARROW-424 and squashes the following commits: 0894719 [Wes McKinney] Make ReadAt, Write HDFS functions threadsafe