alamb opened a new issue, #2779:
URL: https://github.com/apache/arrow-rs/issues/2779
**Describe the bug**
When operating on an array that was `slice`ed, the result of `min` is
incorrect
```
min([Null, 4.0] --> should be 4.0
```
However,
```
min([Null, Null, Null, Null, Null, Null, 4.0].slice(4,2)) --> should be 4.0
as well but returns None
```
**To Reproduce**
Use this program:
```rust
use arrow::{array::{Float64Array, Array, as_primitive_array},
datatypes::Float64Type};
fn main() {
// behavior of sliced min changed (TODO make a demonstration)
// Input is [None, 4.0], min value should be 4.0
let expected_min = Some(4.0);
let input: Float64Array = vec![None, Some(4.0)].into_iter().collect();
let min = arrow::compute::min(&input);
assert_eq!(min, expected_min);
// however, when sliced the min value is incorrect
let sliced_input: Float64Array = vec![None, None, None, None, None,
Some(4.0)].into_iter().collect();
let sliced_input = sliced_input.slice(4, 2);
let sliced_input = as_primitive_array::<Float64Type>(&sliced_input);
// The array valare are equal
assert_eq!(sliced_input, &input);
// but the minimum is not
let sliced_min = arrow::compute::min(&sliced_input);
assert_eq!(sliced_min, expected_min);
}
```
**Expected behavior**
The example should pass. It passes on arrow `22.0.0` but fails on arrow
`23.0.0` like this:
```
thread 'main' panicked at 'assertion failed: `(left == right)`
left: `None`,
right: `Some(4.0)`', src/main.rs:25:5
stack backtrace:
```
**Additional context**
Found while debugging upgrade in IOx:
https://github.com/influxdata/influxdb_iox/pull/5694
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