[jira] [Created] (ARROW-9038) [C++] Improve BitBlockCounter

[Yibo Cai (Jira)]

Yibo Cai created ARROW-9038:
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             Summary: [C++] Improve BitBlockCounter
                 Key: ARROW-9038
                 URL: https://issues.apache.org/jira/browse/ARROW-9038
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Yibo Cai


ARROW-9029 implements BitBlockCounter. There are chances to improve pops 
counting performance per this review comment: 
https://github.com/apache/arrow/pull/7346#discussion_r435005226



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