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Posted to jira@arrow.apache.org by "Apache Arrow JIRA Bot (Jira)" <ji...@apache.org> on 2020/09/01 14:56:00 UTC
[jira] [Assigned] (ARROW-9873) [C++][Compute] Improve mode kernel
for intergers within limited value range
[ https://issues.apache.org/jira/browse/ARROW-9873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Arrow JIRA Bot reassigned ARROW-9873:
--------------------------------------------
Assignee: Yibo Cai (was: Apache Arrow JIRA Bot)
> [C++][Compute] Improve mode kernel for intergers within limited value range
> ---------------------------------------------------------------------------
>
> Key: ARROW-9873
> URL: https://issues.apache.org/jira/browse/ARROW-9873
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Yibo Cai
> Assignee: Yibo Cai
> Priority: Major
> Labels: pull-request-available
> Attachments: mode-range-skylake.png
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> It's possible to improve mode kernel performance for integers within limited value range by using a value indexed array instead of general hash table.
> Similar trick is used in sorting kernel ARROW-1571.
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