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https://issues.apache.org/jira/browse/ARROW-17923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sanjiban Sengupta reassigned ARROW-17923:
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Assignee: Sanjiban Sengupta
> [C++] Consider dictionary arrays for special fragment fields
> ------------------------------------------------------------
>
> Key: ARROW-17923
> URL: https://issues.apache.org/jira/browse/ARROW-17923
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Will Jones
> Assignee: Sanjiban Sengupta
> Priority: Minor
>
> I noticed in ARROW-15281 we made {{__filename}} a string column. In common
> cases, this will be inefficient if materialized. If possible, it may be
> better to have them be dictionary arrays.
> As an example,
> [here|https://github.com/apache/arrow/pull/12826#issuecomment-1230745059] is
> a user report of 10x increased memory usage caused by accidentally including
> these special fragment columns.
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