Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/18281#discussion_r134123840
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/OneVsRest.scala ---
@@ -17,29 +17,34 @@
package org.apache.spark.ml.classification
-import java.util.{List => JList}
import java.util.UUID
-import scala.collection.JavaConverters._
+import scala.concurrent.Future
+import scala.concurrent.duration.Duration
import scala.language.existentials
import org.apache.hadoop.fs.Path
import org.json4s.{DefaultFormats, JObject, _}
import org.json4s.JsonDSL._
import org.json4s.jackson.JsonMethods._
-import org.apache.spark.SparkContext
import org.apache.spark.annotation.Since
import org.apache.spark.ml._
import org.apache.spark.ml.attribute._
import org.apache.spark.ml.linalg.Vector
import org.apache.spark.ml.param.{Param, ParamMap, ParamPair, Params}
+<<<<<<< HEAD
--- End diff --
some sort of merge problem? this shouldn't be in a commit
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