bmarcott commented on a change in pull request #30889:
URL: https://github.com/apache/spark/pull/30889#discussion_r547927241
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File path: mllib/src/main/scala/org/apache/spark/ml/tree/treeModels.scala
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@@ -401,8 +403,13 @@ private[ml] object DecisionTreeModelReadWrite {
}
val dataPath = new Path(path, "data").toString
- val data = sparkSession.read.parquet(dataPath).as[NodeData]
- buildTreeFromNodes(data.collect(), impurityType)
+ var df = sparkSession.read.parquet(dataPath)
Review comment:
I guess spark schema doesn't allow setting default values (and converted
from case class) to enable something like below?
spark.read.schema(nodeDataSchema).parquet(dataPath).as[NodeData]
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