Github user imatiach-msft commented on a diff in the pull request:
https://github.com/apache/spark/pull/16377#discussion_r93639635
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tree/impl/DecisionTreeMetadata.scala
---
@@ -113,6 +113,10 @@ private[spark] object DecisionTreeMetadata extends
Logging {
throw new IllegalArgumentException(s"DecisionTree requires size of
input RDD > 0, " +
s"but was given by empty one.")
}
+ if (numFeatures == 0) {
--- End diff --
Thank you, I've made the change to use require(numFeatures > 0, ....) in
the latest commit.
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