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Posted to jira@arrow.apache.org by "Ritchie (Jira)" <ji...@apache.org> on 2020/11/11 08:06:00 UTC

[jira] [Created] (ARROW-10554) [Rust] Default to non-cryptographic hash function?

Ritchie created ARROW-10554:
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             Summary: [Rust] Default to non-cryptographic hash function?
                 Key: ARROW-10554
                 URL: https://issues.apache.org/jira/browse/ARROW-10554
             Project: Apache Arrow
          Issue Type: Wish
            Reporter: Ritchie


THis isn't a major issue/ or even one at all. 

I was wondering how guys are looking towards using a non-cryptographic hash function (as SeaHash or Fnv) as default for Schema (and maybe other locations in crate). 

Arrow currently defaults to the default HashMap and HashSet. This uses a cryptographic hasher to guard you against DOS-attacks, which I believe isn't needed most of the time. This extra security has some performance overhead.



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