Github user gaborgsomogyi commented on a diff in the pull request:
https://github.com/apache/spark/pull/20362#discussion_r165378573
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala ---
@@ -566,6 +565,7 @@ class ALSSuite
test("read/write") {
val spark = this.spark
import spark.implicits._
+
--- End diff --
Fixed.
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