Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/640#discussion_r12358888
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/ShuffleMapTask.scala ---
@@ -17,11 +17,13 @@
package org.apache.spark.scheduler
+import scala.language.existentials
+
import java.io._
import java.util.zip.{GZIPInputStream, GZIPOutputStream}
import scala.collection.mutable.HashMap
-import scala.language.existentials
+import scala.util.Try
--- End diff --
(talked offline, but just in case anyone else was curious, the order is
scala.language.* > java > scala > library > spark. The scala language features
are made special because they're intended to change the way the compiler
behaves, although it's more of a futureproof thing right now.)
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