Yin Huai created SPARK-2632:
-------------------------------
Summary: 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
Reporter: Yin Huai
Priority: Blocker
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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