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https://issues.apache.org/jira/browse/ARROW-8504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Micah Kornfield reassigned ARROW-8504:
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Assignee: Micah Kornfield
> [C++] Add a method that takes an RLE visitor for a bitmap.
> ----------------------------------------------------------
>
> Key: ARROW-8504
> URL: https://issues.apache.org/jira/browse/ARROW-8504
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Micah Kornfield
> Assignee: Micah Kornfield
> Priority: Major
>
> For nullability data, in many cases nulls are not evenly distributed. In
> these cases it would be beneficial to have a mechanism to understand when
> runs of set/unset bits are encountered. One example of this is writing
> translating a bitmap to parquet definition levels .
>
> An implementation path could be to add this as method on Bitmap that makes an
> adaptor callback for VisitWords but I think at least for parquet an iterator
> API might be more appropriate (something that is easily stoppable/resumable).
>
>
>
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