Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/12836#discussion_r61708372
--- Diff: R/pkg/R/DataFrame.R ---
@@ -1187,6 +1187,65 @@ setMethod("dapply",
dataFrame(sdf)
})
+#' gapply
+#'
+#' Apply a function to each group of a DataFrame.
--- End diff --
In the description, we need to explain what is a group; Otherwise, users
will not know how to use it.
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