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https://issues.apache.org/jira/browse/SPARK-11255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974793#comment-14974793
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shane knapp commented on SPARK-11255:
-------------------------------------

[~shivaram] and i are looking in to this right now.  backporting the jenkins 
workers will be a project, with (potentially) a couple of days of downtime as 
my staging instance is gone and i'll need to test on the live jenkins (don't 
ask -- datacenter fire a month and a half ago).

if we do go w/3.1.1, here's what we'll need to do:
* wipe all vestiges of R and friends from the jenkins workers
* compile 3.1.1 from source, create an rpm and dist to all workers
* reinstall all R packages (to ensure they work w/3.1.1)
* test
* fix
* repeat N times
* profit



> R Test build should run on R 3.1.1
> ----------------------------------
>
>                 Key: SPARK-11255
>                 URL: https://issues.apache.org/jira/browse/SPARK-11255
>             Project: Spark
>          Issue Type: Bug
>          Components: SparkR
>            Reporter: Felix Cheung
>            Priority: Minor
>
> Test should run on R 3.1.1 which is the version listed as supported.
> Apparently there are few R changes that can go undetected since Jenkins Test 
> build is running something newer.



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