Github user junyangq commented on a diff in the pull request:
https://github.com/apache/spark/pull/14705#discussion_r75429536
--- Diff: R/pkg/R/DataFrame.R ---
@@ -2464,8 +2489,10 @@ setMethod("unionAll",
#' Union two or more SparkDataFrames. This is equivalent to `UNION ALL` in
SQL.
#' Note that this does not remove duplicate rows across the two
SparkDataFrames.
#'
-#' @param x A SparkDataFrame
-#' @param ... Additional SparkDataFrame
+#' @param x a SparkDataFrame.
+#' @param ... additional SparkDataFrame(s).
+#' @param deparse.level currently not used (put here to match the
signature of
--- End diff --
Here is in accordance with the order of arguments in function declaration.
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