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Posted to jira@arrow.apache.org by "Sanjiban Sengupta (Jira)" <ji...@apache.org> on 2022/10/17 06:00:00 UTC

[jira] [Assigned] (ARROW-17923) [C++] Consider dictionary arrays for special fragment fields

     [ https://issues.apache.org/jira/browse/ARROW-17923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sanjiban Sengupta reassigned ARROW-17923:
-----------------------------------------

    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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