[jira] [Resolved] (ARROW-10208) [C++] String split kernels do not propagate nulls correctly on sliced input

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-10208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved ARROW-10208.
------------------------------------
    Resolution: Fixed

Issue resolved by pull request 8496
[https://github.com/apache/arrow/pull/8496]

> [C++] String split kernels do not propagate nulls correctly on sliced input
> ---------------------------------------------------------------------------
>
>                 Key: ARROW-10208
>                 URL: https://issues.apache.org/jira/browse/ARROW-10208
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Maarten Breddels
>            Assignee: Antoine Pitrou
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.0.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> I am not sure if this is a specific test issue or valid behavior, but when writing a test in [https://github.com/apache/arrow/pull/8271] 
> The following test fails:
> {code:java}
> this->CheckUnary("split_pattern", R"(["foo bar", "foo", null])", list(this->type()),  //                  R"([["foo", "bar"], ["foo"], null])", &options);
> {code}
> with the following output
> {code:java}
> Failed:
> Got: 
>   [
>     [
>       [
>         "foo",
>         "bar"
>       ]
>     ],
>     [
>       [
>         "foo"
>       ],
>       null
>     ]
>   ]
> Expected: 
>   [
>     [
>       [
>         "foo",
>         "bar"
>       ]
>     ],
>     [
>       [
>         "foo"
>       ],
>       null
>     ]
>   ]
> {code}
> while the outputs are the same, the arrays are seen as unequal.



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