[jira] [Commented] (ARROW-15458) [R] Arrow/Parquet can't open encrypted parquet files

["Dewey Dunnington (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-15458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17484684#comment-17484684 ] 

Dewey Dunnington commented on ARROW-15458:
------------------------------------------

Thanks for this feature request!

I'm not sure that this feature is exposed at the C++  level yet (i.e., I couldn't find it in the current implementation of {{parquet::ArrowReaderProperties}} on the Arrow C++ side). This is what we use in R to pass options to the Parquet reader, so I'm not sure we can do that until it's implemented there.

Where we do this in R: https://github.com/apache/arrow/blob/94d4719024202248902507e7e9d2d4ef39ca9323/r/R/parquet.R#L572-L597

Where we do this in R/C++: https://github.com/apache/arrow/blob/master/r/src/parquet.cpp#L41-L84

Where we do this in Arrow C++: https://github.com/apache/arrow/blob/542e81b6dea62f90817b117b1cb1b2de953f293e/cpp/src/parquet/properties.h#L559-L630

> [R] Arrow/Parquet can't open encrypted parquet files
> ----------------------------------------------------
>
>                 Key: ARROW-15458
>                 URL: https://issues.apache.org/jira/browse/ARROW-15458
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>    Affects Versions: 6.0.1
>            Reporter: Jaime Salvador
>            Priority: Major
>              Labels: features
>
> I have some programs written in C++ that use ARROW/PARQUET in encrypted format, but int order to check the data stored in parquet files, I need a quick way to check it, so I thought R could be useful for me, but I can't find the way to pass the "key" to decrypt the data (in R).
> I think it is an unsupported feature (not supported yet)!



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