Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14922#discussion_r77318912
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/param/shared/sharedParams.scala ---
@@ -405,5 +405,9 @@ private[ml] trait HasAggregationDepth extends Params {
/** @group expertGetParam */
final def getAggregationDepth: Int = $(aggregationDepth)
+
+ def getAggregationDepthByFormula(driverMemory: Long, dimension: Int,
partitionNum: Int): Int = {
+ if (dimension > 200) 2 else 1
--- End diff --
Can you explain this formula? I'm still not sure what the logic of this
change is.
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