[jira] [Commented] (ARROW-8532) [C++][CSV] Add support for sentinel values.

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

    [ https://issues.apache.org/jira/browse/ARROW-8532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17303455#comment-17303455 ] 

Antoine Pitrou commented on ARROW-8532:
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Sorry, forgot the link to the documentation for compute functions: https://arrow.apache.org/docs/cpp/compute.html#structural-transforms

> [C++][CSV] Add support for sentinel values.
> -------------------------------------------
>
>                 Key: ARROW-8532
>                 URL: https://issues.apache.org/jira/browse/ARROW-8532
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Ravil Bikbulatov
>            Priority: Major
>
> Some systems still use sentinel values to store nulls. It would be good if read_csv would place sentinel values and user wouldn't need to convet null bitmaps to sentinel values.
> Adding this support doesn't contradict Arrow specification as null values are undefined. Also it wouldn't add any overhead to read_csv. Since Arrow is general purpose framework I think we can relieve users from pain of converting bitmats to sentinel values.



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