Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22236#discussion_r213571991
--- Diff: mllib/src/main/scala/org/apache/spark/ml/fpm/FPGrowth.scala ---
@@ -187,7 +191,8 @@ class FPGrowth @Since("2.2.0") (
items.unpersist()
}
- copyValues(new FPGrowthModel(uid, frequentItems)).setParent(this)
+ copyValues(new FPGrowthModel(uid, frequentItems,
parentModel.itemSupport, inputRowCount))
--- End diff --
Well, there is no way to know the total size of the training dataset from
the frequent itemsets unfortunately... So yes, we need to deal with it
unfortunately.
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