Jonathan Keane created ARROW-14379:
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Summary: [R] Create a custom extension of list that stores
row-level metadata
Key: ARROW-14379
URL: https://issues.apache.org/jira/browse/ARROW-14379
Project: Apache Arrow
Issue Type: Sub-task
Components: R
Reporter: Jonathan Keane
Since lists can be nested, we should be able store each element as something
like {{list(value = "foo", attributes = list(attr1 = TRUE, attr2 = "baz"))}}
and then we can reconstitute that in the R conversion to transfer the
attributes element to attributes.
This will be more efficient (since we get compression on the column +
metadata/attributes) and we also will be able to filter these + use them in
datasets since each row has all of the information about itself that it needs
to roundtrip.
This would get us SF columns for free
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