Antoine Pitrou created ARROW-2427:
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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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