Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/22227#discussion_r219690825 --- Diff: R/pkg/R/functions.R --- @@ -3404,19 +3404,27 @@ setMethod("collect_set", #' Equivalent to \code{split} SQL function. #' #' @rdname column_string_functions +#' @param limit determines the length of the returned array. --- End diff -- shall we mention this is an optional param?
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