**Reporter**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-4394) / @kou **Assignee**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-4394) / @kou #### Related issues: - [[C++] Remove usage of "extern template class" from NumericArray<T>](https://github.com/apache/arrow/issues/20963) (is related to) #### PRs and other links: - [GitHub Pull Request #3503](https://github.com/apache/arrow/pull/3503) <sub>**Note**: *This issue was originally created as [ARROW-4394](https://issues.apache.org/jira/browse/ARROW-4394). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*</sub>