Kenta Murata created ARROW-7515:
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Summary: [C++] Rename nonexistent and non_existent to not_found
Key: ARROW-7515
URL: https://issues.apache.org/jira/browse/ARROW-7515
Project: Apache Arrow
Issue Type: Task
Components: C++
Reporter: Kenta Murata
Assignee: Kenta Murata-- This message was sent by Atlassian Jira (v8.3.4#803005)
