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https://issues.apache.org/jira/browse/ARROW-6340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson resolved ARROW-6340.
------------------------------------
    Resolution: Fixed

Issue resolved by pull request 5454
[https://github.com/apache/arrow/pull/5454]

> [R] Implements low-level bindings to Dataset classes
> ----------------------------------------------------
>
>                 Key: ARROW-6340
>                 URL: https://issues.apache.org/jira/browse/ARROW-6340
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++ - Dataset, R
>            Reporter: Francois Saint-Jacques
>            Assignee: Neal Richardson
>            Priority: Major
>              Labels: dataset, pull-request-available
>             Fix For: 1.0.0
>
>          Time Spent: 6h
>  Remaining Estimate: 0h
>
> The following classes should be accessible from R:
>  * class DataSource
>  * class DataSourceDiscovery
>  * class Dataset
>  * class ScanContext, ScanOptions, ScanTask
>  * class ScannerBuilder
>  * class Scanner
> The end result is reading a directory of parquet files as a single stream. 
> One should be able to re-implement 
> [https://github.com/apache/arrow/pull/5720] in R. 
> See also [https://github.com/apache/arrow/pull/5675/files] for another 
> end-to-end example in C++.



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