Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/2928#discussion_r19368910
--- Diff:
core/src/main/scala/org/apache/spark/util/random/RandomSampler.scala ---
@@ -87,15 +87,19 @@ class BernoulliSampler[T](lb: Double, ub: Double,
complement: Boolean = false)
@DeveloperApi
class PoissonSampler[T](mean: Double) extends RandomSampler[T, T] {
- private[random] var rng = new Poisson(mean, new DRand)
+ private[random] var rng = new PoissonDistribution(mean)
override def setSeed(seed: Long) {
- rng = new Poisson(mean, new DRand(seed.toInt))
+ rng = new PoissonDistribution(
+ new Well19937c(seed),
--- End diff --
Ah of course. Will do.
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