Github user pauloangelo commented on the pull request: https://github.com/apache/spark/pull/1229#issuecomment-147232717 Hi all, I'm getting similar problem using kmeans clustering with Spark-1.5.1. The stacktrace is below. To overcome the problem, I'm setting runs=1, which is not good, because the job is not executed in parallel. ``` kmeans.setRuns(1) ``` Any clue? Thank you in advance. ``` Driver stacktrace: org.apache.spark.SparkException: Job aborted due to stage failure: Task 2 in stage 5.0 failed 4 times, most recent failure: Lost task 2.3 in stage 5.0 (TID 18, combate): org.apache.spark.SparkException: Can only zip RDDs with same number of elements in each partition at org.apache.spark.rdd.RDD$$anonfun$zip$1$$anonfun$apply$27$$anon$1.hasNext(RDD.scala:832) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) at org.apache.spark.util.Utils$.getIteratorSize(Utils.scala:1553) at org.apache.spark.rdd.RDD$$anonfun$count$1.apply(RDD.scala:1121) at org.apache.spark.rdd.RDD$$anonfun$count$1.apply(RDD.scala:1121) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1848) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1848) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) at org.apache.spark.scheduler.Task.run(Task.scala:88) at org.apache.spark.executor.Executor$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$1.run(EventLoop.scala:48) at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:567) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1822) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1835) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1848) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1919) at org.apache.spark.rdd.RDD.count(RDD.scala:1121) at org.apache.spark.rdd.RDD.takeSample(RDD.scala:485) at org.apache.spark.mllib.clustering.KMeans.initKMeansParallel(KMeans.scala:376) at org.apache.spark.mllib.clustering.KMeans.runAlgorithm(KMeans.scala:249) at org.apache.spark.mllib.clustering.KMeans.run(KMeans.scala:213) at org.hogzilla.dns.HogDNS$.kmeans(HogDNS.scala:194) at org.hogzilla.dns.HogDNS$.run(HogDNS.scala:73) at Hogzilla$.main(Hogzilla.scala:47) at Hogzilla.main(Hogzilla.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.spark.deploy.yarn.ApplicationMaster$$anon$2.run(ApplicationMaster.scala:525) ``` Some good links are: https://github.com/apache/spark/blob/f0f563a3c43fc9683e6920890cce44611c0c5f4b/mllib/src/main/scala/org/apache/spark/mllib/clustering/KMeans.scala#L376 https://github.com/apache/spark/blob/f0f563a3c43fc9683e6920890cce44611c0c5f4b/core/src/main/scala/org/apache/spark/rdd/RDD.scala#L473
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