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Posted to jira@arrow.apache.org by "Jorge Leitão (Jira)" <ji...@apache.org> on 2021/11/11 21:48:00 UTC

[jira] [Created] (ARROW-14680) [C++] NullArray should not expect 1 buffer.

Jorge Leitão created ARROW-14680:
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             Summary: [C++] NullArray should not expect 1 buffer.
                 Key: ARROW-14680
                 URL: https://issues.apache.org/jira/browse/ARROW-14680
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
            Reporter: Jorge Leitão


When round-tripping over the C data interface, the validation of the NullArray requests 1 buffer. However, [the specification requires none|https://arrow.apache.org/docs/format/Columnar.html#null-layout].

This also happens when creating a NullArray - the below errors:

```
import pyarrow

pyarrow.NullArray.from_buffers(pyarrow.null(), 10, [])
> ValueError: Type's expected number of buffers (1) did not match the passed number (0).
```




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