Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/14150#discussion_r70820419
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAModel.scala ---
@@ -784,7 +784,13 @@ class DistributedLDAModel private[clustering] (
@Since("1.5.0")
def topTopicsPerDocument(k: Int): RDD[(Long, Array[Int], Array[Double])]
= {
graph.vertices.filter(LDA.isDocumentVertex).map { case (docID,
topicCounts) =>
- val topIndices = argtopk(topicCounts, k)
+ // TODO: Remove work-around for the breeze bug.
+ // https://github.com/scalanlp/breeze/issues/561
+ val topIndices = if (k == topicCounts.length) {
+ Seq.range(0, k)
+ } else {
+ argtopk(topicCounts, k)
+ }
--- End diff --
Here we hit the breeze bug (https://github.com/scalanlp/breeze/issues/561),
I use work-around here and sent PR to breeze to fix it.
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