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https://issues.apache.org/jira/browse/ARROW-14660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17444134#comment-17444134
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Jonathan Keane commented on ARROW-14660:
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Do the S3 tests also leave files open? I thought I remember seeing "closing
file" warnings after those tests finish
> [R] Investigate file closing
> ----------------------------
>
> Key: ARROW-14660
> URL: https://issues.apache.org/jira/browse/ARROW-14660
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Jonathan Keane
> Priority: Major
>
> In a few cases, [we have the pattern of {{write;
> close}}|https://github.com/apache/arrow/blob/f4dd80612f4c498a3bf9da53e974dc85aed78313/r/R/parquet.R#L199-L200]
> when we probably should use {{on.exit()}} unless we can confirm that C++ is
> closing the file on error.
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