Github user szyszy commented on a diff in the pull request:
https://github.com/apache/spark/pull/20761#discussion_r223915996
--- Diff:
resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/ClientSuite.scala
---
@@ -35,7 +36,7 @@ import org.apache.hadoop.yarn.conf.YarnConfiguration
import org.apache.hadoop.yarn.util.Records
import org.mockito.Matchers.{eq => meq, _}
import org.mockito.Mockito._
-import org.scalatest.Matchers
+import org.scalatest.{BeforeAndAfterAll, Matchers}
--- End diff --
yep, it was unused, removed it.
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