Github user freeman-lab commented on a diff in the pull request: https://github.com/apache/spark/pull/4306#discussion_r24038692 --- Diff: mllib/src/main/scala/org/apache/spark/mllib/regression/StreamingLinearAlgorithm.scala --- @@ -58,14 +58,14 @@ abstract class StreamingLinearAlgorithm[ A <: GeneralizedLinearAlgorithm[M]] extends Logging { /** The model to be updated and used for prediction. */ - protected var model: M + protected var model: Option[M] = null --- End diff -- Ah right, `null` -> `None`, and then use `Some`, I see your changes, thanks for fixing that!
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