[jira] [Closed] (ARROW-14379) [R] Create a custom extension of list that stores row-level metadata

["Neal Richardson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neal Richardson closed ARROW-14379.
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    Resolution: Won't Fix

> [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
>            Priority: Major
>
> 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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