[jira] [Closed] (ARROW-7426) [R] read_parquet and write_parquet not working on Ubuntu 19.10

["Neal Richardson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-7426?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neal Richardson closed ARROW-7426.
----------------------------------
      Assignee: Neal Richardson
    Resolution: Not A Problem

If you used conda to install the C++ library, you should use conda for the R package too. 

{code}
conda install -c conda-forge r-arrow
{code}

See http://arrow.apache.org/docs/r/#installation

> [R] read_parquet and write_parquet not working on Ubuntu 19.10
> --------------------------------------------------------------
>
>                 Key: ARROW-7426
>                 URL: https://issues.apache.org/jira/browse/ARROW-7426
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: R
>    Affects Versions: 0.15.1
>         Environment: Ubuntu 19.10
>            Reporter: claesmaelick@gmail.com
>            Assignee: Neal Richardson
>            Priority: Major
>
> After installing the R package for arrow, I get the following error when trying to read or write a parquet file: 
> {quote}> read_parquet("example.parquet")
>  Error in io___MemoryMappedFile__Open(path, mode) : 
>  Cannot call io___MemoryMappedFile__Open(). Please use arrow::install_arrow() to install required runtime libraries. 
>  > write_parquet(mtcars, "test.parquet")
>  Error in Table__from_dots(dots, schema) : 
>  Cannot call Table__from_dots(). Please use arrow::install_arrow() to install required runtime libraries.
> {quote}
> The problem occurs with both the latest stable release on CRAN and the latest development version from GitHub. I installed the C++ arrow library through conda as there was no working deb package for Ubuntu 19.10.



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