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Posted to jira@arrow.apache.org by "Jörn Horstmann (Jira)" <ji...@apache.org> on 2020/09/04 16:18:00 UTC

[jira] [Created] (ARROW-9916) [RUST] Avoid cloning ArrayData in several places

Jörn Horstmann created ARROW-9916:
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             Summary: [RUST] Avoid cloning ArrayData in several places
                 Key: ARROW-9916
                 URL: https://issues.apache.org/jira/browse/ARROW-9916
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust
    Affects Versions: 1.0.0
            Reporter: Jörn Horstmann


I noticed this while benchmarking improvements in ARROW-9895. A flamegraph showed a significant amount of time spent in Arc::clone/atomic_add followed by Arc::drop/atomic_sub

 The Array trait has two methods for accessing ArrayData, `.data()` which clones an `Arc<ArrayData>` and `.data_ref()` which only borrows the data. In many places borrow can be used instead of clone.




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