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Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2018/11/20 15:42:00 UTC

[jira] [Assigned] (ARROW-2211) [C++] Use simpler hash functions for integers

     [ https://issues.apache.org/jira/browse/ARROW-2211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou reassigned ARROW-2211:
-------------------------------------

    Assignee: Antoine Pitrou  (was: Wes McKinney)

> [C++] Use simpler hash functions for integers
> ---------------------------------------------
>
>                 Key: ARROW-2211
>                 URL: https://issues.apache.org/jira/browse/ARROW-2211
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Wes McKinney
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> We are using a relatively complex hash function on 32- and 64-bit integers. A simpler hash with fewer CPU instructions should be sufficient for our needs



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