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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2019/09/03 17:22:02 UTC

[jira] [Assigned] (ARROW-6385) [C++] Investigate xxh3

     [ https://issues.apache.org/jira/browse/ARROW-6385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou reassigned ARROW-6385:
-------------------------------------

    Assignee: Antoine Pitrou

> [C++] Investigate xxh3
> ----------------------
>
>                 Key: ARROW-6385
>                 URL: https://issues.apache.org/jira/browse/ARROW-6385
>             Project: Apache Arrow
>          Issue Type: Task
>          Components: Benchmarking, C++
>            Reporter: Antoine Pitrou
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> xxh3 is a new hash algorithm by Yann Collet that claims excellent speed on both small/tiny and large keys. It has accelerated paths for x86 SSE2, AVX and ARM NEON. It also has excellent hash quality.
> https://fastcompression.blogspot.com/2019/03/presenting-xxh3.html
> Perhaps this can replace our current complex strategy involving a custom tiny string hashing implementation, a HW CRC32-based path where available for large strings, and a murmurhash2 fallback.



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