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https://issues.apache.org/jira/browse/ARROW-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16761514#comment-16761514
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Wes McKinney commented on ARROW-1636:
-------------------------------------
We observe data that is all nulls, so in such cases we refuse to guess about
the type. It might be a good idea for Gandiva to support null at some point
(which can cast to anything)
> Integration tests for null type
> -------------------------------
>
> Key: ARROW-1636
> URL: https://issues.apache.org/jira/browse/ARROW-1636
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Java
> Reporter: Wes McKinney
> Assignee: Pindikura Ravindra
> Priority: Major
> Labels: columnar-format-1.0
> Fix For: 0.14.0
>
>
> This was not implemented on the C++ side, and came up in ARROW-1584.
> Realistically arrays may be of null type, and we should be able to message
> these correctly
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