srowen commented on a change in pull request #24586:
[SPARK-27682][CORE][GRAPHX][MLLIB] Replace use of collections and methods that
will be removed in Scala 2.13 with work-alikes
URL: https://github.com/apache/spark/pull/24586#discussion_r283113973
##########
File path:
mllib/src/test/scala/org/apache/spark/ml/tree/impl/RandomForestSuite.scala
##########
@@ -505,11 +503,11 @@ class RandomForestSuite extends SparkFunSuite with
MLlibTestSparkContext {
val failString = s"Failed on test with:" +
s"numTrees=$numTrees, featureSubsetStrategy=$featureSubsetStrategy,"
+
s" numFeaturesPerNode=$numFeaturesPerNode, seed=$seed"
- val nodeStack = new mutable.ArrayStack[(Int, LearningNode)]
+ val nodeStack = new mutable.ListBuffer[(Int, LearningNode)]
val topNodes: Array[LearningNode] = new Array[LearningNode](numTrees)
Range(0, numTrees).foreach { treeIndex =>
topNodes(treeIndex) = LearningNode.emptyNode(nodeIndex = 1)
- nodeStack.push((treeIndex, topNodes(treeIndex)))
+ nodeStack.+=:((treeIndex, topNodes(treeIndex)))
Review comment:
Oops, my search and replace didn't quite work. Done.
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