Github user sun-rui commented on a diff in the pull request:
https://github.com/apache/spark/pull/10037#discussion_r46767133
--- Diff: R/pkg/R/generics.R ---
@@ -623,6 +623,10 @@ setGeneric("getItem", function(x, ...) {
standardGeneric("getItem") })
#' @rdname column
#' @export
+setGeneric("isNaN", function(x) { standardGeneric("isNaN") })
--- End diff --
@shivaram, to be clear, IsNaN, isnan and is.nan are functions (in
org.apache.spark.sql.functions) applied to Column, they are not DataFrame
operators. IsNaN function is deprecated by isnan function. We add is.nan as an
alias of isnan.
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