[jira] [Created] (ARROW-10216) [Rust] Simd implementation of min/max aggregation kernels for primitive types

[Jira]

Jörn Horstmann created ARROW-10216:
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             Summary: [Rust] Simd implementation of min/max aggregation kernels 
for primitive types
                 Key: ARROW-10216
                 URL: https://issues.apache.org/jira/browse/ARROW-10216
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust
            Reporter: Jörn Horstmann


Using a similar approach as the sum kernel (ARROW-10015). Instead of 
initializing the accumulator with 0 we'd need the largest/smallest possible 
value for each ArrowNumericType (i.e. u64::MAX or +-Inf)

Pseudo code for min aggregation 
{code}
// initialize accumulator
min_acc = +Inf
// aggregate each chunk
min_acc = min(min_acc, select(valid, value, +Inf))
{code}



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