Hi Ted, thanks for answering. The map is just that, whenever I try inside the map it throws this ClassNotFoundException, even if I do map(f => f) it throws the exception. What is bothering me is that when I do a take or a first it returns the result, which make me conclude that the previous code isn't wrong.
Kind Regards, Dirceu 2016-03-17 12:50 GMT-03:00 Ted Yu <yuzhih...@gmail.com>: > bq. $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1 > > Do you mind showing more of your code involving the map() ? > > On Thu, Mar 17, 2016 at 8:32 AM, Dirceu Semighini Filho < > dirceu.semigh...@gmail.com> wrote: > >> Hello, >> I found a strange behavior after executing a prediction with MLIB. >> My code return an RDD[(Any,Double)] where Any is the id of my dataset, >> which is BigDecimal, and Double is the prediction for that line. >> When I run >> myRdd.take(10) it returns ok >> res16: Array[_ >: (Double, Double) <: (Any, Double)] = >> Array((1921821857196754403.000000000000000000,0.1690292052496703), >> (4545756323742222427.000000000000000000,0.16902820241892452), >> (989198096568001939.000000000000000000,0.16903432789699502), >> (14284129652106187990.000000000000000000,0.16903517653451386), >> (17980228074225252497.000000000000000000,0.16903151028332508), >> (3861345958263692781.000000000000000000,0.16903056986183976), >> (17558198701997383205.000000000000000000,0.1690295450319745), >> (10651576092054552310.000000000000000000,0.1690286445174418), >> (4534494349035056215.000000000000000000,0.16903303401862327), >> (5551671513234217935.000000000000000000,0.16902303368995966)) >> But when I try to run some map on it: >> myRdd.map(_._1).take(10) >> It throws a ClassCastException: >> org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 >> in stage 72.0 failed 4 times, most recent failure: Lost task 0.3 in stage >> 72.0 (TID 1774, 172.31.23.208): java.lang.ClassNotFoundException: >> $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1 >> at java.net.URLClassLoader$1.run(URLClassLoader.java:366) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:425) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:358) >> at java.lang.Class.forName0(Native Method) >> at java.lang.Class.forName(Class.java:278) >> at >> org.apache.spark.serializer.JavaDeserializationStream$$anon$1.resolveClass(JavaSerializer.scala:67) >> at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612) >> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) >> at >> org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:72) >> at >> org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:98) >> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:61) >> at org.apache.spark.scheduler.Task.run(Task.scala:88) >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> at java.lang.Thread.run(Thread.java:745) >> Driver stacktrace: >> at org.apache.spark.scheduler.DAGScheduler.org >> $apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1283) >> at >> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1271) >> at >> org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1270) >> at >> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) >> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) >> at >> org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1270) >> at >> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:697) >> at >> org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:697) >> at scala.Option.foreach(Option.scala:236) >> at >> org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:697) >> at >> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1496) >> at >> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1458) >> at >> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1447) >> at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) >> at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:567) >> at org.apache.spark.SparkContext.runJob(SparkContext.scala:1824) >> at org.apache.spark.SparkContext.runJob(SparkContext.scala:1837) >> at org.apache.spark.SparkContext.runJob(SparkContext.scala:1850) >> at org.apache.spark.rdd.RDD$$anonfun$take$1.apply(RDD.scala:1302) >> at >> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147) >> at >> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:108) >> at org.apache.spark.rdd.RDD.withScope(RDD.scala:310) >> at org.apache.spark.rdd.RDD.take(RDD.scala:1276) >> at org.apache.spark.rdd.RDD$$anonfun$first$1.apply(RDD.scala:1316) >> at >> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147) >> at >> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:108) >> at org.apache.spark.rdd.RDD.withScope(RDD.scala:310) >> at org.apache.spark.rdd.RDD.first(RDD.scala:1315) >> at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:34) >> at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:39) >> at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:41) >> at $iwC$$iwC$$iwC$$iwC$$iwC.<init>(<console>:43) >> at $iwC$$iwC$$iwC$$iwC.<init>(<console>:45) >> at $iwC$$iwC$$iwC.<init>(<console>:47) >> at $iwC$$iwC.<init>(<console>:49) >> at $iwC.<init>(<console>:51) >> at <init>(<console>:53) >> at .<init>(<console>:57) >> at .<clinit>(<console>) >> at .<init>(<console>:7) >> at .<clinit>(<console>) >> at $print(<console>) >> 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 >> org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:1065) >> at >> org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1340) >> at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:840) >> at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:871) >> at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:819) >> at >> org.apache.zeppelin.spark.IUberSparkInterpreter.interpretInput(IUberSparkInterpreter.java:865) >> at >> org.apache.zeppelin.spark.IUberSparkInterpreter.interpret(IUberSparkInterpreter.java:830) >> at >> org.apache.zeppelin.spark.IUberSparkInterpreter.interpret(IUberSparkInterpreter.java:818) >> at >> org.apache.zeppelin.interpreter.ClassloaderInterpreter.interpret(ClassloaderInterpreter.java:57) >> at >> org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:93) >> at >> org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:331) >> at org.apache.zeppelin.scheduler.Job.run(Job.java:171) >> at >> org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139) >> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) >> at java.util.concurrent.FutureTask.run(FutureTask.java:266) >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) >> 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) >> Caused by: java.lang.ClassNotFoundException: >> $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$anonfun$1 >> at java.net.URLClassLoader$1.run(URLClassLoader.java:366) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:425) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:358) >> at java.lang.Class.forName0(Native Method) >> at java.lang.Class.forName(Class.java:278) >> at >> org.apache.spark.serializer.JavaDeserializationStream$$anon$1.resolveClass(JavaSerializer.scala:67) >> at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612) >> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at >> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1997) >> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1921) >> at >> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) >> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) >> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) >> at >> org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:72) >> at >> org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:98) >> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:61) >> at org.apache.spark.scheduler.Task.run(Task.scala:88) >> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> ... 1 more >> >> I'm using spark 1.5.2 compiled with hadoop 2.6. >> Does anybody know how to avoid this exception? >> >> Kind Regards, >> Dirceu >> > >
