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https://issues.apache.org/jira/browse/ARROW-7608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020298#comment-17020298
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Francois Saint-Jacques commented on ARROW-7608:
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* Dataset's source is found via Dataset::sources() returns vector<Source>
* Souce's kind Source::type_name() returns string
* Format's kind Format::type_name() returns string
I'll add a method to FileSystemSource to return a list of file path.
> [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
> Assignee: Francois Saint-Jacques
> 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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