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Kiran Kumar Joseph edited comment on SPARK-33280 at 10/29/20, 5:44 PM: ----------------------------------------------------------------------- The master and slaves are running on the same box (MacOS Catlina 10.15.7) with same java version {noformat} openjdk version "1.8.0_252" OpenJDK Runtime Environment (build 1.8.0_252-b09) Eclipse OpenJ9 VM (build openj9-0.20.0, JRE 1.8.0 Mac OS X amd64-64-Bit Compressed References 20200427_544 (JIT enabled, AOT enabled) OpenJ9 - 05fa2d361 OMR - d4365f371 JCL - 6a92a55d72 based on jdk8u252-b09) {noformat} But same is reproducible on a yarn cluster (Red Hat Enterprise Linux Server release 7.8 (Maipo)) with the below java version {noformat} $ java -version openjdk version "1.8.0_242" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_242-b08) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.242-b08, mixed mode) {noformat} was (Author: voiddrum): The master and slaves are running on the same box (MacOS Catlina 10.15.7) with same java version {noformat} openjdk version "1.8.0_252" OpenJDK Runtime Environment (build 1.8.0_252-b09) Eclipse OpenJ9 VM (build openj9-0.20.0, JRE 1.8.0 Mac OS X amd64-64-Bit Compressed References 20200427_544 (JIT enabled, AOT enabled) OpenJ9 - 05fa2d361 OMR - d4365f371 JCL - 6a92a55d72 based on jdk8u252-b09) {noformat} But same is reproducible on a yarn cluster (Red Hat Enterprise Linux Server release 7.8 (Maipo)) with the below java version {noformat} josephk@bassniumtan ~ $ java -version openjdk version "1.8.0_242" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_242-b08) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.242-b08, mixed mode) {noformat} > Spark 3.0 serialization issue > ----------------------------- > > Key: SPARK-33280 > URL: https://issues.apache.org/jira/browse/SPARK-33280 > Project: Spark > Issue Type: Bug > Components: Spark Core > Affects Versions: 3.0.1 > Environment: OS: MacOS Catalina 10.15.7 > +Environment 1:+ > Spark: spark-3.0.1-bin-hadoop2.7 > code compiled with : scala 2.12 > +Environment 2:+ > spark-2.4.7-bin-hadoop2.7 > code compiled with: scala 2.12 > +Environment 3 (This succeeds):+ > spark-2.4.7-bin-hadoop2.7 > code compiled with: scala 2.11 > Reproducible on YARN cluster with 3.0.1 > Reporter: Kiran Kumar Joseph > Priority: Major > > This code which does a simple RDD map operation and saves the data fails on > executor with a deserialization error. > {noformat} > package test.pkg > import org.apache.spark.SparkContext > import org.apache.spark.rdd.RDD > trait Stage { > val sc = SparkContext.getOrCreate() > sc.setCheckpointDir(sc.getConf.get("spark.checkpoint.dir", > "/tmp/checkpoints")) > val app = new App(sc) > } > class App(sc: SparkContext) { > def write(data: RDD[String]): Unit = { > if (!data.isEmpty()) > data.saveAsTextFile("/tmp/test-output") > } > } > object SampleStage extends Stage { > def main(args: Array[String]): Unit = { > val sampleList = Seq("a", "b", "c") > writeList(sampleList) > sc.stop() > } > def writeList(data: Seq[String]) = { > val dataRDD = sc.parallelize(data).map(x => x.toLowerCase()) > app.write(dataRDD) > } > } {noformat} > > If I change the line > {noformat} > val dataRDD = sc.parallelize(data).map(x => x.toLowerCase()) {noformat} > to > {noformat} > val dataRDD = sc.parallelize(data) {noformat} > there is no exception and job succeeds > Sparksubmit command: > {noformat} > $SPARK_HOME/bin/spark-submit --master spark://masterhost:port --conf > spark.app.name=SampleStage --executor-memory 2g --num-executors 2 --class > test.pkg.SampleStage --deploy-mode client --conf spark.driver.cores=4 > sampleStage.jar {noformat} > > Executor stacktrace: > {noformat} > Driver stacktrace: > 20/10/28 22:55:34 INFO DAGScheduler: Job 0 failed: isEmpty at App.scala:13, > took 1.931078 s > Exception in thread "main" org.apache.spark.SparkException: Job aborted due > to stage failure: Task 0 in stage 0.0 failed 4 times, most recent failure: > Lost task 0.3 in stage 0.0 (TID 3, 192.168.86.20, executor 0): > java.lang.NoClassDefFoundError: test.pkg.SampleStage$ (initialization failure) > at > java.lang.J9VMInternals.initializationAlreadyFailed(J9VMInternals.java:98) > 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:498) > at > java.lang.invoke.SerializedLambda.readResolve(SerializedLambda.java:230) > 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:498) > at > java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1274) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2258) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1746) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2472) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2394) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2247) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1746) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2472) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2394) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2247) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1746) > at > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2472) > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2394) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2247) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1746) > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:548) > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:458) > at > org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) > at > org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) > at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:83) > at org.apache.spark.scheduler.Task.run(Task.scala:123) > at > org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:408) > at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360) > at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:414) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:821) > Caused by: org.apache.spark.SparkException: A master URL must be set in your > configuration > at org.apache.spark.SparkContext.<init>(SparkContext.scala:368) > at org.apache.spark.SparkContext.<init>(SparkContext.scala:117) > at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2544) > at test.pkg.Stage.$init$(App.scala:6) > at test.pkg.SampleStage$.<init>(App.scala:17) > at test.pkg.SampleStage$.<clinit>(App.scala) > ... 36 more > {noformat} > Driver stacktrace > {noformat} > at > org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1925) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1913) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1912) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1912) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:948) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:948) > at scala.Option.foreach(Option.scala:257) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:948) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2146) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2095) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2084) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49) > at > org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:759) > at org.apache.spark.SparkContext.runJob(SparkContext.scala:2061) > at org.apache.spark.SparkContext.runJob(SparkContext.scala:2082) > at org.apache.spark.SparkContext.runJob(SparkContext.scala:2101) > at org.apache.spark.rdd.RDD$$anonfun$take$1.apply(RDD.scala:1409) > at > org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) > at > org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) > at org.apache.spark.rdd.RDD.withScope(RDD.scala:385) > at org.apache.spark.rdd.RDD.take(RDD.scala:1382) > at > org.apache.spark.rdd.RDD$$anonfun$isEmpty$1.apply$mcZ$sp(RDD.scala:1517) > at org.apache.spark.rdd.RDD$$anonfun$isEmpty$1.apply(RDD.scala:1517) > at org.apache.spark.rdd.RDD$$anonfun$isEmpty$1.apply(RDD.scala:1517) > at > org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) > at > org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) > at org.apache.spark.rdd.RDD.withScope(RDD.scala:385) > at org.apache.spark.rdd.RDD.isEmpty(RDD.scala:1516) > at test.pkg.App.write(App.scala:13) > at test.pkg.SampleStage$.writeList(App.scala:25) > at test.pkg.SampleStage$.main(App.scala:20) > at test.pkg.SampleStage.main(App.scala) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52) > at > org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:845) > at > org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:161) > at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:184) > at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86) > at > org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:920) > at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:929) > at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) > {noformat} -- This message was 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