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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