[jira] [Commented] (ARROW-15961) [C++] Check nullability when validating fields on batches or struct arrays

["Krisztian Szucs (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-15961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17525949#comment-17525949 ] 

Krisztian Szucs commented on ARROW-15961:
-----------------------------------------

Postponing to 9.0 based on the PR comments.

> [C++] Check nullability when validating fields on batches or struct arrays
> --------------------------------------------------------------------------
>
>                 Key: ARROW-15961
>                 URL: https://issues.apache.org/jira/browse/ARROW-15961
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Antoine Pitrou
>            Assignee: Kaouther Abrougui
>            Priority: Major
>              Labels: good-first-issue, good-second-issue, pull-request-available
>             Fix For: 8.0.0
>
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> According to ARROW-15899, it is possible to declare a field non-nullable, associate with data that has nulls, and still pass validation.
> Validation should instead fail in such a situation (at least full validation, since computing the null count can be O\(n\)).



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