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https://issues.apache.org/jira/browse/SPARK-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14071365#comment-14071365
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Yin Huai commented on SPARK-2632:
---------------------------------
I have created a a [REPL
test|https://github.com/yhuai/spark/commit/93ae2183f2f32d81ed488e23fd88b84057d385fc].
> Importing a method of class in Spark REPL causes the REPL to pulls in
> unnecessary stuff.
> ----------------------------------------------------------------------------------------
>
> Key: SPARK-2632
> URL: https://issues.apache.org/jira/browse/SPARK-2632
> Project: Spark
> Issue Type: Bug
> Affects Versions: 1.0.0, 1.0.1
> Reporter: Yin Huai
> Priority: Blocker
>
> Master is affected by this bug. To reproduce the exception, you can start a
> local cluster (sbin/start-all.sh) then open a spark shell.
> {code}
> class X() { println("What!"); def y = 3 }
> val x = new X
> import x.y
> case class Person(name: String, age: Int)
> sc.textFile("examples/src/main/resources/people.txt").map(_.split(",")).map(p
> => Person(p(0), p(1).trim.toInt)).collect
> {code}
> Then you will find the exception. I am attaching the stack trace below...
> {code}
> org.apache.spark.SparkException: Job aborted due to stage failure: Task 0.0
> in stage 0.0 (TID 0) had a not serializable result: $iwC$$iwC$$iwC$$iwC$X
> at
> org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1045)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1029)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1027)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
> at
> org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1027)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:632)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:632)
> at scala.Option.foreach(Option.scala:236)
> at
> org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:632)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessActor$$anonfun$receive$2.applyOrElse(DAGScheduler.scala:1230)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498)
> at akka.actor.ActorCell.invoke(ActorCell.scala:456)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237)
> at akka.dispatch.Mailbox.run(Mailbox.scala:219)
> at
> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386)
> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at
> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> {code}
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