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Posted to jira@arrow.apache.org by "Alexander (Jira)" <ji...@apache.org> on 2021/09/10 02:11:00 UTC

[jira] [Assigned] (ARROW-13969) [C++][Compute] Implement SelectKStable

     [ https://issues.apache.org/jira/browse/ARROW-13969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexander reassigned ARROW-13969:
---------------------------------

    Assignee:     (was: Alexander)

> [C++][Compute] Implement SelectKStable
> --------------------------------------
>
>                 Key: ARROW-13969
>                 URL: https://issues.apache.org/jira/browse/ARROW-13969
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Alexander
>            Priority: Major
>              Labels: analytics, query-engine
>             Fix For: 6.0.0
>
>
> PR [https://github.com/apache/arrow/pull/11019] implements SelectKUnstable.
>  
> Some previous result of SelectKUnstable using StableHeap is shown here: [https://github.com/apache/arrow/pull/11019#issuecomment-913977337] 
>  
> So, implementation of SelectKStable   should explore how to implement this algorithm using StablePartition + stable_sorting.



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