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https://issues.apache.org/jira/browse/ARROW-15119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17460094#comment-17460094
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Antoine Pitrou commented on ARROW-15119:
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This sounds fine to me as long as it's an optional deviation in the generic
tests.
> [C++] Some filesystems may allow reading directories
> ----------------------------------------------------
>
> Key: ARROW-15119
> URL: https://issues.apache.org/jira/browse/ARROW-15119
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Carlos O'Ryan
> Priority: Major
>
> The generic filesystem tests assert that reading a directory should fail. If
> directories are implemented as described in ARROW-15114 this would be
> expensive to implement (at least in the near future), as it would require two
> roundtrips to the service to fetch the object metadata.
> I would rather change the generic tests to allow reading directories, and if
> we find a cheaper way to fix this later we can restore the tests.
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