I am working some kind of Spark MLlib Test(Decision Tree) and I used IRIS data from Cran-R package. Original IRIS Data is not a good format for Spark MLlib. so I changed data format(change data format and features's location)
When I ran sample Spark MLlib code for DT, I met the error like below How can i solve this error? ============================================================== 14/12/15 14:27:30 ERROR TaskSetManager: Task 21.0:0 failed 4 times; aborting job 14/12/15 14:27:30 INFO TaskSchedulerImpl: Cancelling stage 21 14/12/15 14:27:30 INFO DAGScheduler: Failed to run aggregate at DecisionTree.scala:657 14/12/15 14:27:30 INFO TaskSchedulerImpl: Stage 21 was cancelled 14/12/15 14:27:30 WARN TaskSetManager: Loss was due to org.apache.spark.TaskKilledException org.apache.spark.TaskKilledException at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 14/12/15 14:27:30 INFO TaskSchedulerImpl: Removed TaskSet 21.0, whose tasks have all completed, from pool org.apache.spark.SparkException: Job aborted due to stage failure: Task 21.0:0 failed 4 times, most recent failure: Exception failure in TID 34 on host krbda1anode01.kr.test.com: scala.MatchError: 2.0 (of class java.lang.Double) org.apache.spark.mllib.tree.DecisionTree$.classificationBinSeqOp$1(DecisionTree.scala:568) org.apache.spark.mllib.tree.DecisionTree$.org$apache$spark$mllib$tree$DecisionTree$$binSeqOp$1(DecisionTree.scala:623) org.apache.spark.mllib.tree.DecisionTree$$anonfun$4.apply(DecisionTree.scala:657) org.apache.spark.mllib.tree.DecisionTree$$anonfun$4.apply(DecisionTree.scala:657) scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:144) scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:144) scala.collection.Iterator$class.foreach(Iterator.scala:727) scala.collection.AbstractIterator.foreach(Iterator.scala:1157) scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:144) scala.collection.AbstractIterator.foldLeft(Iterator.scala:1157) scala.collection.TraversableOnce$class.aggregate(TraversableOnce.scala:201) scala.collection.AbstractIterator.aggregate(Iterator.scala:1157) org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838) org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838) org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116) org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116) org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111) org.apache.spark.scheduler.Task.run(Task.scala:51) org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:187) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:745) Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1033) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1017) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1015) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1015) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:633) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:633) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:633) at org.apache.spark.scheduler.DAGSchedulerEventProcessActor$$anonfun$receive$2.applyOrElse(DAGScheduler.scala:1207) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) at akka.actor.ActorCell.invoke(ActorCell.scala:456) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) at akka.dispatch.Mailbox.run(Mailbox.scala:219) at akka.dispatch.ForkJoinExecutorConfigurator$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) ============================================================== input data is ( first column means species. 1 =setosa 2 => versicolor) 1,5.1,3.5,1.4,0.2 1,4.9,3,1.4,0.2 1,4.7,3.2,1.3,0.2 1,4.6,3.1,1.5,0.2 1,5,3.6,1.4,0.2 1,5.4,3.9,1.7,0.4 2,4.6,3.4,1.4,0.3 2,5,3.4,1.5,0.2 2,4.4,2.9,1.4,0.2 2,4.9,3.1,1.5,0.1 2,5.4,3.7,1.5,0.2 2,4.8,3.4,1.6,0.2 2,4.8,3,1.4,0.1 sample Spark MLlib Decision tree code is import org.apache.spark.SparkContext import org.apache.spark.mllib.tree.DecisionTree import org.apache.spark.mllib.regression.LabeledPoint import org.apache.spark.mllib.linalg.Vectors import org.apache.spark.mllib.tree.configuration.Algo._ import org.apache.spark.mllib.tree.impurity.Gini // Load and parse the data file val data = sc.textFile("dt_R.csv") val parsedData = data.map { line => val parts = line.split(',').map(_.toDouble) LabeledPoint(parts(0), Vectors.dense(parts.tail)) } // Run training algorithm to build the model val maxDepth = 3 val model = DecisionTree.train(parsedData, Classification, Gini, maxDepth) -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/Q-about-Spark-MLlib-Decision-tree-scala-MatchError-2-0-of-class-java-lang-Double-tp20678.html Sent from the Apache Spark User List mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org