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Posted to issues@arrow.apache.org by "Yibo Cai (Jira)" <ji...@apache.org> on 2020/04/21 02:57:00 UTC

[jira] [Updated] (ARROW-8537) [C++] Performance regression from ARROW-8523

     [ https://issues.apache.org/jira/browse/ARROW-8537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yibo Cai updated ARROW-8537:
----------------------------
    Component/s: C++

> [C++] Performance regression from ARROW-8523
> --------------------------------------------
>
>                 Key: ARROW-8537
>                 URL: https://issues.apache.org/jira/browse/ARROW-8537
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Yibo Cai
>            Priority: Major
>
> I optimized BitmapReader in [this PR|https://github.com/apache/arrow/pull/6986] and see performance uplift of BitmapReader test case. I didn't check other test cases as this change looks trivial.
> I reviewed all test cases just now and see big performance drop of 4 cases, details at [PR link|https://github.com/apache/arrow/pull/6986#issuecomment-616915079].
> I also compared performance of code using BitmapReader, no obvious changes found. Looks we should revert that PR.



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