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https://issues.apache.org/jira/browse/ARROW-12055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson resolved ARROW-12055.
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Resolution: Fixed
> [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
> Assignee: Ian Cook
> Priority: Major
> Fix For: 5.0.0
>
>
> {code:java}
> > is.na(NaN)
> [1] TRUE
> > is.na(Scalar$create(NaN))
> [1] FALSE{code}
> FWIW, NumPy/pandas also behaves like R in this regard:
> {code:java}
> > pd.isna(np.nan)
> True{code}
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