[jira] [Commented] (ARROW-16781) [C++] Complete RunLengthEncoded type

["Apache Arrow JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-16781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17619719#comment-17619719 ] 

Apache Arrow JIRA Bot commented on ARROW-16781:
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This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned per [project policy|https://arrow.apache.org/docs/dev/developers/bug_reports.html#issue-assignment]. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

> [C++] Complete RunLengthEncoded type
> ------------------------------------
>
>                 Key: ARROW-16781
>                 URL: https://issues.apache.org/jira/browse/ARROW-16781
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: C++
>            Reporter: Tobias Zagorni
>            Assignee: Tobias Zagorni
>            Priority: Major
>
> We currently have a RunLengthEncoded DataType class that is good enough to RLE ArrayData and ArraySpan instances, and dispatch Kernels based on it, with not too much functionally beyond that. This task is to implement the regular Arrow C++ functionality you would expect to work on all data types:
>  * Corresponding Array type
>  * Corresponding Array Builder
>  * type traits
>  * make_array() should work
>  * Validate() / ValidateFull() passes
>  * type tests pass
>  * ...?
> To me these all seem pretty entangled with each other, but if you find a way to split this into multiple tasks, feel free to do so.
> The basic functionality is included in [https://github.com/apache/arrow/pull/13330]. So this PR can be based upon that branch.



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