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https://issues.apache.org/jira/browse/ARROW-7690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson resolved ARROW-7690.
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Fix Version/s: 0.16.0
Resolution: Fixed
Issue resolved by pull request 6304
[https://github.com/apache/arrow/pull/6304]
> [R] Cannot write parquet to OutputStream
> ----------------------------------------
>
> Key: ARROW-7690
> URL: https://issues.apache.org/jira/browse/ARROW-7690
> Project: Apache Arrow
> Issue Type: Bug
> Components: R
> Affects Versions: 0.15.1
> Reporter: Bob
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.16.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> The R package does not allow for the ability to write to a FileOutputStream.
> Minimal testing code:
> library(arrow)
> tf1 <- arrow::FileOutputStream$create(path = "output.parquet")
> arrow::write_parquet(data.frame(x = 1:5), tf1)
> Throws error:
> Error in inherits(sink, OutputStream) : 'what' must be a character vector
>
> The issue appears to be in line 153 of parquet.R
> if (is.character(sink)) {
> sink <- FileOutputStream$create(sink)
> on.exit(sink$close())
> } *else if (!inherits(sink, OutputStream))* {
> abort("sink must be a file path or an OutputStream")
> }
>
> Should be !inherits(sink,'OutputStream')
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