Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/19698#discussion_r150564678
--- Diff: core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala ---
@@ -23,19 +23,21 @@ import javax.servlet.http.HttpServletRequest
import scala.collection.JavaConverters._
import scala.collection.mutable.{HashMap, ListBuffer}
+import scala.util.Try
--- End diff --
unused (and more imports here can be cleaned up)
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