Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/14613#discussion_r75115733
--- Diff: R/pkg/R/DataFrame.R ---
@@ -392,7 +392,11 @@ setMethod("coltypes",
}
if (is.null(type)) {
- stop(paste("Unsupported data type: ", x))
+ specialtype <- specialtypeshandle(x)
--- End diff --
here it looks like we are expecting `type` to be R native type, but seems
like `specialtypeshandle` is returning `double` which is not a R native type?
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