Github user facaiy commented on a diff in the pull request:
https://github.com/apache/spark/pull/17383#discussion_r108318833
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/Node.scala ---
@@ -301,7 +302,7 @@ private[tree] class LearningNode(
* group of nodes on one call to
*
[[org.apache.spark.ml.tree.impl.RandomForest.findBestSplits()]].
*/
- def predictImpl(binnedFeatures: Array[Int], splits:
Array[Array[Split]]): Int = {
+ def predictImpl(binnedFeatures: Int => Int, splits:
Array[Array[Split]]): Int = {
--- End diff --
when use `breeze.linalg.SparseVector`, compile fails:
```scala
java.lang.AssertionError: assertion failed: List(method apply$mcI$sp,
method apply$mcI$sp)
at
scala.reflect.internal.Symbols$Symbol.suchThat(Symbols.scala:1947)
at
scala.tools.nsc.transform.SpecializeTypes$$anon$2.matchingSymbolInPrefix$1(SpecializeTypes.scala:1474)
at
scala.tools.nsc.transform.SpecializeTypes$$anon$2.transformSelect$1(SpecializeTypes.scala:1497)
at
scala.tools.nsc.transform.SpecializeTypes$$anon$2.transform1(SpecializeTypes.scala:1593)
at
scala.tools.nsc.transform.SpecializeTypes$$anon$2$$anonfun$transform$3.apply(SpecializeTypes.scala:1442)
......
```
I don't know why? Can anyone help?
Thanks.
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