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https://issues.apache.org/jira/browse/ARROW-7608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020219#comment-17020219
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Joris Van den Bossche commented on ARROW-7608:
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It would indeed be nice to have access to such information.
Additional information / inspection capabilities can be very useful for the
purpose of debugging / understanding what is going on (eg being able to verify
which file paths a dataset has discovered)
> [C++][Dataset] Expose more informational properties
> ---------------------------------------------------
>
> Key: ARROW-7608
> URL: https://issues.apache.org/jira/browse/ARROW-7608
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++ - Dataset
> Reporter: Neal Richardson
> Priority: Major
>
> In thinking about what I'd want a useful print method for a Dataset in R to
> include, there are a few things that come to mind, and by skimming dataset.h,
> they're not available:
> * How many Sources it has
> * For a Source, what kind (local filesystem, other filesystem, etc.), base
> path (at least where we didn't provide a list of files), how many files, what
> file format
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