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Posted to issues@arrow.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/04/09 17:45:00 UTC

[jira] [Updated] (ARROW-2427) [C++] ReadAt implementations suboptimal

     [ https://issues.apache.org/jira/browse/ARROW-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-2427:
----------------------------------
    Labels: pull-request-available  (was: )

> [C++] ReadAt implementations suboptimal
> ---------------------------------------
>
>                 Key: ARROW-2427
>                 URL: https://issues.apache.org/jira/browse/ARROW-2427
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 0.9.0
>            Reporter: Antoine Pitrou
>            Priority: Major
>              Labels: pull-request-available
>
> The {{ReadAt}} implementations for at least {{OSFile}} and {{MemoryMappedFile}} take the file lock and seek. They could instead read directly from the given offset, allowing concurrent I/O from multiple threads.



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