Sam Albers created ARROW-16622:
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Summary: [R] Detect compression by magic number where possible
Key: ARROW-16622
URL: https://issues.apache.org/jira/browse/ARROW-16622
Project: Apache Arrow
Issue Type: Bug
Components: R
Affects Versions: 8.0.0
Reporter: Sam Albers
readr does this like so:
[https://github.com/tidyverse/readr/commit/3e1195762a204fd053ba0d7d88ed3e80a1810510]
I think we could largely take that same approach at least as a first pass at
detection perhaps falling back on file extensions. This would be a little
safer.
This would apply to read functions though maybe if not too expensive we could
check outputs for a successful write.
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