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Posted to issues@arrow.apache.org by "Neal Richardson (JIRA)" <ji...@apache.org> on 2019/06/03 22:53:00 UTC

[jira] [Created] (ARROW-5502) [R] file readers should mmap

Neal Richardson created ARROW-5502:
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             Summary: [R] file readers should mmap
                 Key: ARROW-5502
                 URL: https://issues.apache.org/jira/browse/ARROW-5502
             Project: Apache Arrow
          Issue Type: Improvement
          Components: R
            Reporter: Neal Richardson
             Fix For: 0.14.0


Arrow is supposed to let you work with datasets bigger than memory. Memory mapping is a big part of that. It should be the default way that files are read in the `read_*` functions. To disable memory mapping, we could use a global `option()`, or a function argument, but that might clutter the interface. Or we could not give a choice and only fall back to not memory mapping if the platform/file system doesn't support it.



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