Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/1110#discussion_r15508295
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/rdd/RDDFunctions.scala ---
@@ -44,6 +47,65 @@ class RDDFunctions[T: ClassTag](self: RDD[T]) {
new SlidingRDD[T](self, windowSize)
}
}
+
+ /**
+ * Reduces the elements of this RDD in a tree pattern.
+ * @param depth suggested depth of the tree
+ * @see [[org.apache.spark.rdd.RDD#reduce]]
+ */
+ def treeReduce(f: (T, T) => T, depth: Int): T = {
--- End diff --
is this used at all? if not maybe we don't need it?
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