CurtHagenlocher commented on issue #40517:
URL: https://github.com/apache/arrow/issues/40517#issuecomment-1996323178
Your example works if I add a quick hack e.g.
```
+ if (nullCount == RecalculateNullCount)
+ {
+ NullCount = CalculateNullCount();
+ }
```
and
```
+ public int CalculateNullCount()
+ {
+ switch (DataType)
+ {
+ case FixedWidthType fixedWidthType:
+ ArrowBuffer nullBuffer = Buffers[0];
+ return nullBuffer.IsEmpty ? 0 :
BitUtility.CountBits(nullBuffer.Span);
+ default:
+ // TODO:
+ throw new NotImplementedException();
+ }
+ }
```
I can finish implementing this over the coming weekend, or someone else
could take it on.
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