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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/09/29 18:38:00 UTC

[jira] [Updated] (ARROW-14165) [C++] Improve table sort performance #2

     [ https://issues.apache.org/jira/browse/ARROW-14165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-14165:
-----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Improve table sort performance #2
> ---------------------------------------
>
>                 Key: ARROW-14165
>                 URL: https://issues.apache.org/jira/browse/ARROW-14165
>             Project: Apache Arrow
>          Issue Type: Task
>          Components: C++
>            Reporter: Antoine Pitrou
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> After ARROW-10898 is solved, it seems some performance may still be left on the table when merging sorted record batches. Two possible directions:
> * save on chunked indexing by relying on record batches and directly accessing subsequent columns in MultipleKeyComparator
> * use left-to-right "radix" merging



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