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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/10/25 04:37:00 UTC

[jira] [Updated] (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 ]

ASF GitHub Bot updated ARROW-17923:
-----------------------------------
    Labels: pull-request-available  (was: )

> [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
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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