[
https://issues.apache.org/jira/browse/ARROW-11051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ziru Niu updated ARROW-11051:
-----------------------------
Priority: Major (was: Blocker)
> [Rust] Array sum result is wrong with remainder fields
> ------------------------------------------------------
>
> Key: ARROW-11051
> URL: https://issues.apache.org/jira/browse/ARROW-11051
> Project: Apache Arrow
> Issue Type: Bug
> Components: Rust
> Affects Versions: 2.0.0
> Environment: Ubuntu 20.04. rustc nightly
> Reporter: Ziru Niu
> Priority: Major
>
> Minimal example
>
> {quote}use arrow::\{array::PrimitiveArray, datatypes::Int64Type};
> fn main() \{
> let mut s = vec![];
> for _ in 0..32
>
> \{
> s.push(Some(1i64)); s.push(None);
> }
> let v: PrimitiveArray<Int64Type> = s.into();
> dbg!(arrow::compute::sum(&v));
> }
>
> {quote}
>
> {quote}// The following code in `compute::sum` is wrong. The bit mask is
> checked reversed.
> remainder.iter().enumerate().for_each(|(i, value)| \{
> if remainder_bits & (1 << i) != 0 \{
> remainder_sum = remainder_sum + *value;
> }
> });
>
> {quote}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
