Hi, I am having a hard time getting to the bottom of this problem. I'm really not sure where to start with it. Everything works fine in local mode.
Cheers, Andrew [testing@instance-16826 ~]$ /opt/mapr/spark/spark-1.5.2/bin/spark-submit --num-executors 21 --executor-cores 5 --master yarn-client --executor-memory 5g ~/pi.py 16/05/09 13:35:07 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 16/05/09 13:35:08 WARN MetricsSystem: Using default name DAGScheduler for source because spark.app.id is not set. 16/05/09 13:35:14 ERROR SparkContext: Error initializing SparkContext. org.apache.spark.SparkException: Yarn application has already ended! It might have been killed or unable to launch application master. at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.waitForApplication(YarnClientSchedulerBackend.scala:123) at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:63) at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:144) at org.apache.spark.SparkContext.<init>(SparkContext.scala:523) at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:61) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379) at py4j.Gateway.invoke(Gateway.java:214) at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79) at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68) at py4j.GatewayConnection.run(GatewayConnection.java:207) at java.lang.Thread.run(Thread.java:745) 16/05/09 13:35:14 ERROR Utils: Uncaught exception in thread Thread-3 java.lang.NullPointerException at org.apache.spark.network.netty.NettyBlockTransferService.close(NettyBlockTransferService.scala:152) at org.apache.spark.storage.BlockManager.stop(BlockManager.scala:1228) at org.apache.spark.SparkEnv.stop(SparkEnv.scala:100) at org.apache.spark.SparkContext$anonfun$stop$12.apply$mcV$sp(SparkContext.scala:1749) at org.apache.spark.util.Utils$.tryLogNonFatalError(Utils.scala:1185) at org.apache.spark.SparkContext.stop(SparkContext.scala:1748) at org.apache.spark.SparkContext.<init>(SparkContext.scala:593) at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:61) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379) at py4j.Gateway.invoke(Gateway.java:214) at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79) at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68) at py4j.GatewayConnection.run(GatewayConnection.java:207) at java.lang.Thread.run(Thread.java:745) Traceback (most recent call last): File "/home/testing/pi.py", line 30, in <module> sc = SparkContext(appName="PythonPi") File "/opt/mapr/spark/spark-1.5.2/python/lib/pyspark.zip/pyspark/context.py", line 113, in __init__ File "/opt/mapr/spark/spark-1.5.2/python/lib/pyspark.zip/pyspark/context.py", line 170, in _do_init File "/opt/mapr/spark/spark-1.5.2/python/lib/pyspark.zip/pyspark/context.py", line 224, in _initialize_context File "/opt/mapr/spark/spark-1.5.2/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py", line 701, in __call__ File "/opt/mapr/spark/spark-1.5.2/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py", line 300, in get_return_value py4j.protocol.Py4JJavaError: An error occurred while calling None.org.apache.spark.api.java.JavaSparkContext. : org.apache.spark.SparkException: Yarn application has already ended! It might have been killed or unable to launch application master. at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.waitForApplication(YarnClientSchedulerBackend.scala:123) at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:63) at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:144) at org.apache.spark.SparkContext.<init>(SparkContext.scala:523) at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:61) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379) at py4j.Gateway.invoke(Gateway.java:214) at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79) at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68) at py4j.GatewayConnection.run(GatewayConnection.java:207) at java.lang.Thread.run(Thread.java:745)