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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2020/09/30 20:22:00 UTC

[jira] [Assigned] (ARROW-10097) [C++] Persist SetLookupState in between usages of IsIn when filtering dataset batches

     [ https://issues.apache.org/jira/browse/ARROW-10097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Kietzman reassigned ARROW-10097:
------------------------------------

    Assignee: Ben Kietzman

> [C++] Persist SetLookupState in between usages of IsIn when filtering dataset batches
> -------------------------------------------------------------------------------------
>
>                 Key: ARROW-10097
>                 URL: https://issues.apache.org/jira/browse/ARROW-10097
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.0.1
>            Reporter: Wes McKinney
>            Assignee: Ben Kietzman
>            Priority: Major
>              Labels: dataset
>             Fix For: 2.0.0
>
>
> Building a large hash table has a non-trivial cost. 
> See mailing list discussion
> https://lists.apache.org/thread.html/rb85519cc21ffb09a836a9107919e07b076165ff81c22fb88b59a8296%40%3Cuser.arrow.apache.org%3E



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