here is what I'm doing on a single node, local spark cluster:
git clone https://github.com/deeplearning4j/dl4j-spark-cdh5-examples.git
cd dl4j-spark-cdh5-examples.git
mvn package
export SPARK_WORKER_MEMORY=13g
spark-submit --class org.deeplearning4j.examples.cnn.MnistExample ./target/dl4j-spark-cdh5-examples-1.0-SNAPSHOT.jar
And here is what I'm getting:
Caused by: java.lang.OutOfMemoryError: Java heap space
Here the full stack traces:
spark-submit --class org.deeplearning4j.examples.cnn.MnistExample ./target/dl4j-spark-cdh5-examples-1.0-SNAPSHOT.jar 21:21:13,414 INFO ~ Load data....
WARNING: COULD NOT LOAD NATIVE SYSTEM BLAS ND4J performance WILL be reduced Please install native BLAS library such as OpenBLAS or IntelMKL See http://nd4j.org/getstarted.html#open for further details
21:21:20,571 INFO ~ Build model.... 21:21:20,776 WARN ~ Objective function automatically set to minimize. Set stepFunction in neural net configuration to change default settings. 21:21:20,886 INFO ~ --- Starting network training --- [Stage 0:> (0 + 6) / 6]
[Stage 0:> (0 + 6) / 6]Exception in thread "dispatcher-event-loop-3" java.lang.OutOfMemoryError: Java heap space 21:24:12,358 ERROR ~ Exception in task 0.0 in stage 0.0 (TID 0) java.lang.IllegalStateException: unread block data at java.io.ObjectInputStream$BlockDataInputStream.setBlockDataMode(ObjectInputStream.java:2421) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1382) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:76) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:115) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:194) 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:744) 21:24:12,358 ERROR ~ Exception in task 5.0 in stage 0.0 (TID 5) java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,358 ERROR ~ Exception in task 3.0 in stage 0.0 (TID 3) java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,358 ERROR ~ Exception in task 1.0 in stage 0.0 (TID 1) java.lang.IllegalStateException: unread block data at java.io.ObjectInputStream$BlockDataInputStream.setBlockDataMode(ObjectInputStream.java:2421) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1382) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:76) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:115) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:194) 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:744) 21:24:12,358 ERROR ~ Exception in task 2.0 in stage 0.0 (TID 2) java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,375 ERROR ~ Uncaught exception in thread Thread[Executor task launch worker-5,5,main] java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,375 ERROR ~ Uncaught exception in thread Thread[Executor task launch worker-3,5,main] java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,375 ERROR ~ Uncaught exception in thread Thread[Executor task launch worker-2,5,main] java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,383 ERROR ~ Task 5 in stage 0.0 failed 1 times; aborting job Exception in thread "main" org.apache.spark.SparkException: Job aborted due to stage failure: Task 5 in stage 0.0 failed 1 times, most recent failure: Lost task 5.0 in stage 0.0 (TID 5, localhost): java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204)
Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1431) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1419) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1418) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1418) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:799) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:799) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:799) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1640) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1599) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1588) at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:620) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1832) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1845) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1858) at org.apache.spark.SparkContext.runJob(SparkContext.scala:1929) at org.apache.spark.rdd.RDD.count(RDD.scala:1157) at org.apache.spark.api.java.JavaRDDLike$class.count(JavaRDDLike.scala:440) at org.apache.spark.api.java.AbstractJavaRDDLike.count(JavaRDDLike.scala:46) at org.deeplearning4j.spark.impl.multilayer.SparkDl4jMultiLayer.fitDataSet(SparkDl4jMultiLayer.java:239) at org.deeplearning4j.examples.cnn.MnistExample.main(MnistExample.java:132) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731) at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181) at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) Caused by: java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newInstance(Array.java:70) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.nd4j.linalg.api.buffer.BaseDataBuffer.doReadObject(BaseDataBuffer.java:880) at org.nd4j.linalg.api.buffer.BaseDataBuffer.readObject(BaseDataBuffer.java:868) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500) at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:74) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1204) 21:24:12,769 ERROR ~ Exception in task 4.0 in stage 0.0 (TID 4) org.apache.spark.TaskKilledException at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:204) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) 21:30:18,649 ERROR ~ Uncaught exception in thread Thread-3 org.apache.spark.SparkException: Error sending message [message = StopBlockManagerMaster] at org.apache.spark.rpc.RpcEndpointRef.askWithRetry(RpcEndpointRef.scala:118) at org.apache.spark.rpc.RpcEndpointRef.askWithRetry(RpcEndpointRef.scala:77) at org.apache.spark.storage.BlockManagerMaster.tell(BlockManagerMaster.scala:225) at org.apache.spark.storage.BlockManagerMaster.stop(BlockManagerMaster.scala:217) at org.apache.spark.SparkEnv.stop(SparkEnv.scala:97) at org.apache.spark.SparkContext$$anonfun$stop$12.apply$mcV$sp(SparkContext.scala:1756) at org.apache.spark.util.Utils$.tryLogNonFatalError(Utils.scala:1229) at org.apache.spark.SparkContext.stop(SparkContext.scala:1755) at org.apache.spark.SparkContext$$anonfun$3.apply$mcV$sp(SparkContext.scala:596) at org.apache.spark.util.SparkShutdownHook.run(ShutdownHookManager.scala:267) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(ShutdownHookManager.scala:239) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1$$anonfun$apply$mcV$sp$1.apply(ShutdownHookManager.scala:239) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1$$anonfun$apply$mcV$sp$1.apply(ShutdownHookManager.scala:239) at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1765) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1.apply$mcV$sp(ShutdownHookManager.scala:239) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1.apply(ShutdownHookManager.scala:239) at org.apache.spark.util.SparkShutdownHookManager$$anonfun$runAll$1.apply(ShutdownHookManager.scala:239)
Any ideas?
Just like any other spark job, consider bumping the xmx of the slaves as well as the master.
Spark has 2 kinds of memory: the executor with spark standalone and the executors.
Please see: How to set Apache Spark Executor memory