I am using *'sbt run'* to execute the code. Detailed sbt output is here ( https://drive.google.com/open?id=0B2dlA_DzEohVakpValRjRS1zVG8).
I had scala 2.11.7 installed on my machine. But even after uninstalling it, I am still getting the exception with 2.11.6. Changing the scala version to 2.11.7 in build.sbt fixes the exception as you suggested. I am unclear as to why it works with 2.11.7 and not 2.11.6. Thanks, Babar On Mon, Nov 2, 2015 at 2:10 PM Jonathan Coveney <jcove...@gmail.com> wrote: > Caused by: java.lang.ClassNotFoundException: scala.Some > > indicates that you don't have the scala libs present. How are you > executing this? My guess is the issue is a conflict between scala 2.11.6 in > your build and 2.11.7? Not sure...try setting your scala to 2.11.7? > > But really, first it'd be good to see what command you're using to invoke > this. > > 2015-11-02 14:48 GMT-05:00 Babar Tareen <babartar...@gmail.com>: > >> Resending, haven't found a workaround. Any help is highly appreciated. >> >> ---------- Forwarded message ---------- >> From: Babar Tareen <babartar...@gmail.com> >> Date: Thu, Oct 22, 2015 at 2:47 PM >> Subject: Getting ClassNotFoundException: scala.Some on Spark 1.5.x >> To: user@spark.apache.org >> >> >> Hi, >> >> I am getting following exception when submitting a job to Spark 1.5.x >> from Scala. The same code works with Spark 1.4.1. Any clues as to what >> might causing the exception. >> >> >> >> *Code:App.scala*import org.apache.spark.SparkContext >> >> object App { >> def main(args: Array[String]) = { >> val l = List(1,2,3,4,5,6,7,8,9,0) >> val sc = new SparkContext("local[4]", "soark-test") >> val rdd = sc.parallelize(l) >> rdd.foreach(println) >> println(rdd.collect()) >> } >> } >> >> *build.sbt* >> lazy val sparkjob = (project in file(".")) >> .settings( >> name := "SparkJob", >> version := "1.0", >> scalaVersion := "2.11.6", >> libraryDependencies := libs >> ) >> >> lazy val libs = Seq( >> "org.apache.spark" %% "spark-core" % "1.5.1" >> ) >> >> >> *Exception:*15/10/22 14:32:42 INFO DAGScheduler: Job 0 failed: foreach >> at app.scala:9, took 0.689832 s >> [error] (run-main-0) org.apache.spark.SparkException: Job aborted due to >> stage failure: Task 2 in stage 0.0 failed 1 times, most recent failure: >> Lost task 2.0 in stage 0.0 (TID 2, localhost): java.io.IOException: >> java.lang.ClassNotFoundException: scala.Some >> [error] at >> org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1163) >> [error] at >> org.apache.spark.Accumulable.readObject(Accumulators.scala:151) >> [error] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> [error] at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) >> [error] at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> [error] at java.lang.reflect.Method.invoke(Method.java:497) >> [error] at >> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) >> [error] at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896) >> [error] at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> [error] at >> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> [error] at >> java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1959) >> [error] at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> [error] at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> [error] at >> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> [error] at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) >> [error] at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918) >> [error] at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> [error] at >> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> [error] at >> java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) >> [error] at >> org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:72) >> [error] at >> org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:98) >> [error] at >> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:194) >> [error] at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> [error] at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> [error] at java.lang.Thread.run(Thread.java:745) >> [error] Caused by: java.lang.ClassNotFoundException: scala.Some >> [error] at java.net.URLClassLoader.findClass(URLClassLoader.java:381) >> [error] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) >> [error] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) >> [error] at java.lang.Class.forName0(Native Method) >> [error] at java.lang.Class.forName(Class.java:348) >> [error] at >> org.apache.spark.serializer.JavaDeserializationStream$$anon$1.resolveClass(JavaSerializer.scala:67) >> [error] at >> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613) >> [error] at >> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518) >> [error] at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774) >> [error] at >> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> [error] at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) >> [error] at >> java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501) >> [error] at >> org.apache.spark.Accumulable$$anonfun$readObject$1.apply$mcV$sp(Accumulators.scala:152) >> [error] at >> org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1160) >> [error] ... 24 more >> [error] >> [error] Driver stacktrace: >> org.apache.spark.SparkException: Job aborted due to stage failure: Task 2 >> in stage 0.0 failed 1 times, most recent failure: Lost task 2.0 in stage >> 0.0 (TID 2, localhost): java.io.IOException: >> java.lang.ClassNotFoundException: scala.Some >> at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1163) >> at org.apache.spark.Accumulable.readObject(Accumulators.scala:151) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> at java.lang.reflect.Method.invoke(Method.java:497) >> at >> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) >> at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> at >> java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1959) >> at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) >> at >> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) >> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) >> at >> org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:72) >> at >> org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:98) >> at >> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:194) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> at java.lang.Thread.run(Thread.java:745) >> >> Thanks, >> Babar Tareen >> > >