Wes McKinney created ARROW-1559:
-----------------------------------
Summary: [C++] Kernel implementations for "unique" (compute
distinct elements of array)
Key: ARROW-1559
URL: https://issues.apache.org/jira/browse/ARROW-1559
Project: Apache Arrow
Issue Type: New Feature
Components: C++
Reporter: Wes McKinney-- This message was sent by Atlassian JIRA (v6.4.14#64029)
