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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/09/02 18:02:00 UTC
[jira] [Resolved] (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 ]
Antoine Pitrou resolved ARROW-9873.
-----------------------------------
Fix Version/s: 2.0.0
Resolution: Fixed
Issue resolved by pull request 8091
[https://github.com/apache/arrow/pull/8091]
> [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
> Fix For: 2.0.0
>
> Attachments: mode-range-skylake.png
>
> Time Spent: 1.5h
> 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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