Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5037#discussion_r26518380
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/regression/StreamingLinearAlgorithm.scala
---
@@ -114,7 +114,7 @@ abstract class StreamingLinearAlgorithm[
if (model.isEmpty) {
throw new IllegalArgumentException("Model must be initialized before
starting prediction.")
}
- data.map(model.get.predict)
--- End diff --
`.map(model.get.predict)` executes `model.get.predict` directly. Check the
following:
~~~scala
val rdd = sc.parallelize(0 until 10)
var func = (x: Int) => 1
val rdd1 = rdd.map(func)
val rdd2 = rdd.map(x => func(x))
func = (x: Int) => 2
rdd1.collect()
rdd2.collect()
~~~
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