Wes McKinney created ARROW-8156:
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Summary: [C++] Add variant of Filesystem::OpenInputFile that has
memory-map like behavior if it is possible
Key: ARROW-8156
URL: https://issues.apache.org/jira/browse/ARROW-8156
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wes McKinney
TensorFlow has the notion of a ReadOnlyMappedRegion
https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/platform/file_system.h#L106
Rather than toggling memory mapping globally at the LocalFilesystem level, it
would be useful for code to be able to request a memory-mapped
{[RandomAccessFile}} if memory mapping is possible
See also ARROW-7854
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