Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/12106#discussion_r58412527
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAOptimizer.scala ---
@@ -451,10 +451,10 @@ final class OnlineLDAOptimizer extends LDAOptimizer {
}
Iterator((stat, gammaPart))
}
- val statsSum: BDM[Double] = stats.map(_._1).reduce(_ += _)
--- End diff --
I would expect so, but I'm not familiar enough about Spark internals to
know if this might return corrupted results.
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