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Optimize approx_distinct on Utf8View #21039
Description
Is your feature request related to a problem or challenge?
We can hash inline strings directly and pass the hash value to HLL, rather than producing a str and passing it to HLL -- this might be a nice speed win for the case when many/most inputs are short strings. Idea from @Dandandan in #21037
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Describe alternatives you've considered
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Additional context
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Activity
neilconway commentedon Mar 18, 2026
take
[-]Optimize approx_distinct on Utf8View[/-][+]Optimize `approx_distinct` on `Utf8View`[/+]perf: Optimize `approx_distinct` for inline Utf8View (#21064)
perf: Optimize `approx_distinct` for inline Utf8View (apache#21064)
perf: Optimize `approx_distinct` for inline Utf8View (apache#21064)