Github user felixcheung commented on the issue:
https://github.com/apache/spark/pull/17731
this **might** be reasonable, but `sparkR.sparkContext` is only called when
`sparkR.session()` is called, and so I'm not sure I follow how if someone is
doing this in a brand new R session:
```
# do not call sparkR.session()
a <- createDataFrame(iris)
```
...which is what I understand from the email exchange on user@, I think.
Could you elaborate if this is what you are trying to support?
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