Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/17965#discussion_r116350189
--- Diff: R/pkg/R/DataFrame.R ---
@@ -3769,3 +3769,33 @@ setMethod("alias",
sdf <- callJMethod(object@sdf, "alias", data)
dataFrame(sdf)
})
+
+
+#' broadcast
+#'
+#' Return a new SparkDataFrame marked as small enough for use in broadcast
joins.
+#'
+#' Equivalent to hint(x, "broadcast).
--- End diff --
`"broadcast"`
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