Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20474#discussion_r166409901
--- Diff: core/src/main/scala/org/apache/spark/ui/SparkUI.scala ---
@@ -17,7 +17,7 @@
package org.apache.spark.ui
-import java.util.{Date, List => JList, ServiceLoader}
+import java.util.Date
--- End diff --
No code seems to be really changing in this file, so I'd avoid touching it.
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