Kyle Kavanagh created ARROW-10093:
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Summary: [R] Add ability to opt-out of int64 -> int demotion
Key: ARROW-10093
URL: https://issues.apache.org/jira/browse/ARROW-10093
Project: Apache Arrow
Issue Type: New Feature
Reporter: Kyle Kavanagh
Currently, if arrow detects that every value in an int64 column can fit in a
32bit int, it will downcast the column an set the type to integer instead of
integer64. Not having a mechanism to disable this optimization makes it tricky
if you have many parallel processes (think HPC use case) performing the same
calculation but potentially outputting different result values, some being
>2^32 and others not. When you go to collect the resulting feather files from
the parallel processes, the types across the files may not line up.
Feature request is to provide an option to disable this demotion and maintain
the source column type.
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