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Posted to dev@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2018/04/09 15:16:00 UTC

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

Antoine Pitrou created ARROW-2427:
-------------------------------------

             Summary: [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


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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