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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2017/03/25 19:02:42 UTC

[jira] [Created] (ARROW-711) [C++] Remove extern template declarations for NumericArray types

Wes McKinney created ARROW-711:
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             Summary: [C++] Remove extern template declarations for NumericArray<T> types
                 Key: ARROW-711
                 URL: https://issues.apache.org/jira/browse/ARROW-711
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Wes McKinney
            Assignee: Wes McKinney


It seems that linkers have diverging semantics around visibility when using the {{extern template}} declaration (see linker errors in https://ci.appveyor.com/project/ApacheSoftwareFoundation/arrow/build/1.0.841). Since the only thing impacted right now is the {{NumericArray<T>}} constructor, removing these doesn't seem too onerous. I ran the existing benchmarks and looked at the library sizes before and after, and there doesn't appear to be a meaningful difference. 



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