Github user HyukjinKwon commented on the issue: https://github.com/apache/spark/pull/19290 BTW, I believe we are testing it with R 3.4.1 via AppVeyor too. I have been thinking it's good to test both old and new versions ... I think we have a weak promise for `R 3.1+` - http://spark.apache.org/docs/latest/index.html#downloading
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