[jira] [Created] (ARROW-4374) [C++] DictionaryBuilder does not correctly report length and null_count

[Uwe L. Korn (JIRA)]

Uwe L. Korn created ARROW-4374:
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             Summary: [C++] DictionaryBuilder does not correctly report length 
and null_count
                 Key: ARROW-4374
                 URL: https://issues.apache.org/jira/browse/ARROW-4374
             Project: Apache Arrow
          Issue Type: Bug
    Affects Versions: 0.12.0
            Reporter: Uwe L. Korn
            Assignee: Uwe L. Korn
             Fix For: 0.13.0


In comparison to most builders, they stay constantly at 0.



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