Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/17697#discussion_r114182801
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/rdd/MLPairRDDFunctions.scala ---
@@ -49,6 +49,18 @@ class MLPairRDDFunctions[K: ClassTag, V: ClassTag](self:
RDD[(K, V)]) extends Se
}
).mapValues(_.toArray.sorted(ord.reverse)) // This is a min-heap, so
we reverse the order.
}
+
+ def topByKey(num: Int, bucketsCount: Int = 200)(implicit ord:
Ordering[V]): RDD[(K, Array[V])] = {
--- End diff --
Doesn't this make a call to `topByKey(n)` ambiguous? maybe not, but seems
like it should. I don't think you want a default value here. The 'default' case
is the existing method.
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