Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/21228#discussion_r186252480 --- Diff: R/pkg/R/functions.R --- @@ -963,6 +964,7 @@ setMethod("kurtosis", #' last(df$c, TRUE) #' } #' @note last since 1.4.0 +#' @note the function is non-deterministic because its result depends on order of rows. --- End diff -- same here about `@note` ditto in all other cases
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