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Posted to dev@arrow.apache.org by "Uwe L. Korn (JIRA)" <ji...@apache.org> on 2017/02/13 08:32:41 UTC

[jira] [Created] (ARROW-553) C++: Faster null bitmap building

Uwe L. Korn created ARROW-553:
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             Summary: C++: Faster null bitmap building
                 Key: ARROW-553
                 URL: https://issues.apache.org/jira/browse/ARROW-553
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Uwe L. Korn
            Assignee: Uwe L. Korn


Currently we build up the bitmaps bit-by-bit which takes very long. Instead we can build them byte-by-byte in the general case and use {{memset}} for the non-null case.



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