Github user necosta commented on the issue:
https://github.com/apache/zeppelin/pull/2383
I'm no expert so don't trust my answer. I have both enabled and working, %r
and %spark.r. The way I understand it, %r is just an interpreter to allow
coding in R (as you would do in RStudio). And %spark.r is R + Spark, so you are
able to interface with Spark in R as you would in Python or Scala. Which one to
use?
depends on your use case I guess.
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