Yue Ni created ARROW-14548:
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Summary: Add madvise random support for memory mapped file
Key: ARROW-14548
URL: https://issues.apache.org/jira/browse/ARROW-14548
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Affects Versions: 6.0.0
Reporter: Yue Ni
Currently, the `MemoryMappedFile` API allows users to specify a list of read
ranges to advise operating system to prefetch `WillNeed` data for better IO
performance, and sometimes, the application's read pattern is random access,
and `POSIX_MADV_RANDOM` advice should be given to operating system to indicate
this so that application with random access capability can perform better by
leveraging this API.
https://man7.org/linux/man-pages/man2/madvise.2.html
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