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Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2022/03/24 08:02:00 UTC

[jira] [Created] (ARROW-16017) [C++] Benchmark key_hash and document tradeoffs with vendored xxhash

Weston Pace created ARROW-16017:
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             Summary: [C++] Benchmark key_hash and document tradeoffs with vendored xxhash
                 Key: ARROW-16017
                 URL: https://issues.apache.org/jira/browse/ARROW-16017
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Weston Pace


ARROW-15239 adds a vectorized hashing function for use initially in execution engine bloom filters and later in the hash-join node.  We should add some benchmarks to explore how the performance compares to the vendored scalar xxhash implementation.  In addition, we should document where the two differ and explain any tradeoffs for future users.



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