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https://issues.apache.org/jira/browse/ARROW-8761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou closed ARROW-8761.
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Resolution: Won't Do
> [C++] Improve the performance of minmax kernel
> ----------------------------------------------
>
> Key: ARROW-8761
> URL: https://issues.apache.org/jira/browse/ARROW-8761
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Liya Fan
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> We improve the performance of the max-min kernel with the simple idea: if the
> current value is smaller than the current min value; then there is no need to
> compare it against the current max value, because it must be smaller than the
> current max value.
> This simple trick reduces the expected number of comparisons from 2n to 1.5n,
> which can be notable for large arrays.
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