shahidki31 commented on a change in pull request #20793: [WIP][SPARK-23643]
Shrinking the buffer in hashSeed up to size of the seed parameter
URL: https://github.com/apache/spark/pull/20793#discussion_r265440799
##########
File path:
mllib/src/test/scala/org/apache/spark/ml/clustering/PowerIterationClusteringSuite.scala
##########
@@ -86,7 +86,10 @@ class PowerIterationClusteringSuite extends SparkFunSuite
assignments.foreach {
case (id, cluster) => predictions(cluster) += id
}
- assert(predictions.toSet === Set((0 until n1).toSet, (n1 until n).toSet))
+ assert(predictions.toSet === Set(
+ Set(0, 30, 9, 1, 31, 2, 32, 24, 3, 25, 4, 26, 27, 19, 20, 21, 22, 23,
16, 17,
+ 18, 33, 34, 5, 35, 6, 36, 28, 7, 29, 8),
+ Set(15, 45, 37, 46, 38, 39, 10, 40, 47, 11, 41, 48, 12, 13, 49, 42, 43,
14, 44)))
Review comment:
@MaxGekk , I think we cannot simply change the expected value like this.
Basically, we create 2 circles: Outer circle has 40 points and inner circle
has 10 points. So, PIC should return a cluster size of 10 and 40 respectively,
if the algorithm work properly
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