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https://issues.apache.org/jira/browse/ARROW-12055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17307081#comment-17307081
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Ian Cook commented on ARROW-12055:
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Note that the {{is_nan}} function throws a {{NotImplemented}} error on
everything but floating point numbers, so we cannot simply define {{is.na}} as
a combination of {{is_null}} and {{is_nan}} irrespective of the data type.
> [R] is.na() evaluates to FALSE on Arrow NaN values
> --------------------------------------------------
>
> Key: ARROW-12055
> URL: https://issues.apache.org/jira/browse/ARROW-12055
> Project: Apache Arrow
> Issue Type: Bug
> Components: R
> Affects Versions: 3.0.0
> Reporter: Ian Cook
> Priority: Major
>
> {code:java}
> > is.na(NaN)
> [1] TRUE
> > is.na(Scalar$create(NaN))
> [1] FALSE{code}
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