Wes McKinney created ARROW-8863:
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Summary: [C++] Array constructors must set ArrayData::null_count
to 0 when there is no validity bitmap
Key: ARROW-8863
URL: https://issues.apache.org/jira/browse/ARROW-8863
Project: Apache Arrow
Issue Type: Bug
Components: C++
Reporter: Wes McKinney
Fix For: 1.0.0
Many type-specific array constructors incorrectly set the null count to
unknown. It would be better to set it to 0
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