[editor] R session for R Editor in Hue cannot start

Steps:
1. Open Hue --> Query ---> Editor ---> R
2. Run some application

Result:
R session cannot start (retry again and again)

Note that there is such issue only for R Editor; Scala and PySpark session start and work without problems.

 

https://review.cloudera.org/r/13828/

https://github.com/cloudera/hue/pull/841