Antoine Pitrou created ARROW-6385:
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Summary: [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
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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