Dandandan commented on a change in pull request #8673:
URL: https://github.com/apache/arrow/pull/8673#discussion_r524387603
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File path: rust/arrow/benches/aggregate_kernels.rs
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@@ -43,6 +43,25 @@ fn create_array(size: usize, with_nulls: bool) -> ArrayRef {
Arc::new(builder.finish())
}
+fn create_string_array(size: usize, with_nulls: bool) -> ArrayRef {
+ // use random numbers to avoid spurious compiler optimizations wrt to
branching
+ let mut rng = seedable_rng();
+ let mut builder = StringBuilder::new(size);
+
+ for _ in 0..size {
+ if with_nulls && rng.gen::<f32>() > 0.5 {
+ builder.append_null().unwrap();
+ } else {
+ let string = seedable_rng()
+ .sample_iter(&Alphanumeric)
+ .take(10)
+ .collect::<String>();
+ builder.append_value(&string).unwrap();
+ }
+ }
+ Arc::new(builder.finish())
+}
Review comment:
Makes sense!
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