Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22227#discussion_r216941747
--- 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.
+#' \itemize{
+#' \item \code{limit > 0}: length of the array will be at most
\code{limit}
+#' \item \code{limit <= 0}: the returned array can have any length
+#' }
--- End diff --
To make it consistent with the reference I gave:
```
#' @param limit determines the length of the returned array.
#' \itemize{
#' \item \code{limit > 0}: length of the array will be at most
\code{limit}
#' \item \code{limit <= 0}: the returned array can have any
length
#' }
```
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