Github user chetkhatri commented on a diff in the pull request: https://github.com/apache/spark/pull/20016#discussion_r157941778 --- Diff: examples/src/main/scala/org/apache/spark/examples/HdfsTest.scala --- @@ -39,7 +39,7 @@ object HdfsTest { val start = System.currentTimeMillis() for (x <- mapped) { x + 2 } val end = System.currentTimeMillis() - println("Iteration " + iter + " took " + (end-start) + " ms") + println(s"Iteration ${iter} took ${(end-start)} ms") --- End diff -- @HyukjinKwon $end-start won't work, both are different variables see. I made changes.
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