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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/11/15 12:14:00 UTC

[jira] [Updated] (ARROW-10596) [Rust] Improve take benchmark

     [ https://issues.apache.org/jira/browse/ARROW-10596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-10596:
-----------------------------------
    Labels: pull-request-available  (was: )

> [Rust] Improve take benchmark
> -----------------------------
>
>                 Key: ARROW-10596
>                 URL: https://issues.apache.org/jira/browse/ARROW-10596
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust
>            Reporter: Jorge Leitão
>            Assignee: Jorge Leitão
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The take benchmark has three issues:
> 1. it is always taking the same element (indices is a constant vector), which is very easy to speculatively predict what the element is going to be.
> 2. It also does not compare with vs without nulls
> 3. all elements of the array are equal, which is again easy to speculatively predict



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