[jira] [Commented] (ARROW-13706) [C++][Compute] Add Find method to Grouper

["Apache Arrow JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-13706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17617225#comment-17617225 ] 

Apache Arrow JIRA Bot commented on ARROW-13706:
-----------------------------------------------

This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned per [project policy|https://arrow.apache.org/docs/dev/developers/bug_reports.html#issue-assignment]. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

> [C++][Compute] Add Find method to Grouper
> -----------------------------------------
>
>                 Key: ARROW-13706
>                 URL: https://issues.apache.org/jira/browse/ARROW-13706
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Michal Nowakiewicz
>            Assignee: Michal Nowakiewicz
>            Priority: Major
>              Labels: query-engine
>
> After SwissTable implements find() method in ARROW-13532, Grouper can add Find() method to its interface. Note that the main problem is that Grouper uses mutable member variables for storing temporary data, whenever it is doing hash table lookups, even when the hash table is used as read-only. Grouper is also not thread-safe, while Find() method ideally should be thread-safe, working on immutable object.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)