fix Scala style problem in FsHistoryProvider

曾林西 · 曾林西 · commit a4f8054ca301 · 2017-06-30T17:37:40.000+08:00
diff --git a/core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala b/core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala
@@ -19,7 +19,7 @@ package org.apache.spark.deploy.history
 
 import java.io.{FileNotFoundException, IOException, OutputStream}
 import java.util.UUID
-import java.util.concurrent.{Executors, ExecutorService, Future, TimeUnit, ConcurrentHashMap}
+import java.util.concurrent.{ConcurrentHashMap, Executors, ExecutorService, Future, TimeUnit}
 import java.util.zip.{ZipEntry, ZipOutputStream}
 
 import scala.collection.mutable
