Github user felixcheung commented on the issue:
https://github.com/apache/spark/pull/16794
I'd prefer not to ```{r, warning=FALSE}``` on the whole vignettes block -
it could mask unexpected warnings. But good point on it being very noisy - I
was concerned to have `suppressWarnings(createDataFrame(iris))` because it
might seems confusing to user reading the example not understanding why we
would have warning there.
To address all these noise, I'd propose either
- we really should fix the root problem with `.` in column names
SPARK-12191, SPARK-11976
- or we should really move examples and documentation away from dataset
that has `.` in column names
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