[jira] [Updated] (ARROW-14528) [R] Add option to attempt 32-bit integer type inference in CSV reader

["Nicola Crane (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nicola Crane updated ARROW-14528:
---------------------------------
        Parent: ARROW-18181
    Issue Type: Sub-task  (was: Improvement)

> [R] Add option to attempt 32-bit integer type inference in CSV reader
> ---------------------------------------------------------------------
>
>                 Key: ARROW-14528
>                 URL: https://issues.apache.org/jira/browse/ARROW-14528
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: R
>            Reporter: Ian Cook
>            Priority: Major
>
> Expose ARROW-13028 to the R bindings so that users can choose to have {{read_csv_arrow(as_data_frame = FALSE)}} and {{open_dataset(format = "csv)}} infer 32-bit integer fields instead of always inferring 64-bit integer fields for all integers (the current behavior).
> Note that there is an existing option in the R bindings that controls something similar: {{arrow.int64_downcast}}. See ARROW-10093 for details. I think we can _not_ reuse this option to control the CSV reader, behavior because (a) users might want to control these behaviors separately, and (b) the default value of {{arrow.int64_downcast}} is {{TRUE}} which does not align with the existing behavior of the CSV reader (always inferring 64-bit integer fields, i.e. _not_ downcasting) and we probably want to retain that as the default behavior. So we will want to add a new argument or a new option to control this.



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