Why do the Spark examples fail to spark-submit on EC2 with spark-ec2 scripts? - amazon-ec2

Question

I downloaded spark-1.5.2 and I setup a cluster on ec2 using the spark-ec2 doc here.
After that I went to examples/ and run mvn package and packaged the examples in a jar.
In the end I run the submit with:
bin/spark-submit --class org.apache.spark.examples.JavaTC --master spark://url_here.eu-west-1.compute.amazonaws.com:7077 --deploy-mode cluster /home/aki/Projects/spark-1.5.2/examples/target/spark-examples_2.10-1.5.2.jar
Instead of it running, I get the error:
WARN RestSubmissionClient: Unable to connect to server spark://url_here.eu-west-1.compute.amazonaws.com:7077.
Warning: Master endpoint spark://url_here.eu-west-1.compute.amazonaws.com:7077 was not a REST server. Falling back to legacy submission gateway instead.
15/12/22 17:36:07 WARN Utils: Your hostname, aki-linux resolves to a loopback address: 127.0.1.1; using 192.168.10.63 instead (on interface wlp4s0)
15/12/22 17:36:07 WARN Utils: Set SPARK_LOCAL_IP if you need to bind to another address
15/12/22 17:36:07 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Exception in thread "main" org.apache.spark.rpc.RpcTimeoutException: Futures timed out after [120 seconds]. This timeout is controlled by spark.rpc.lookupTimeout
at org.apache.spark.rpc.RpcTimeout.org$apache$spark$rpc$RpcTimeout$$createRpcTimeoutException(RpcEnv.scala:214)
at org.apache.spark.rpc.RpcTimeout$$anonfun$addMessageIfTimeout$1.applyOrElse(RpcEnv.scala:229)
at org.apache.spark.rpc.RpcTimeout$$anonfun$addMessageIfTimeout$1.applyOrElse(RpcEnv.scala:225)
at scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:33)
at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcEnv.scala:242)
at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:98)
at org.apache.spark.rpc.RpcEnv.setupEndpointRef(RpcEnv.scala:116)
at org.apache.spark.deploy.Client$$anonfun$7.apply(Client.scala:233)
at org.apache.spark.deploy.Client$$anonfun$7.apply(Client.scala:233)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:108)
at org.apache.spark.deploy.Client$.main(Client.scala:233)
at org.apache.spark.deploy.Client.main(Client.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:674)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:120)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.util.concurrent.TimeoutException: Futures timed out after [120 seconds]
at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
at scala.concurrent.Await$.result(package.scala:107)
at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcEnv.scala:241)
... 21 more

Answer 1

Are you sure the URL to master contains "url-here"?
spark://url_here.eu-west-1.compute.amazonaws.com:7077
Or maybe you are trying to obfuscate it for this post.
If you can you connect the Spark UI at
http://url_here.eu-west-1.compute.amazonaws.com:4040 or depending on your spark version http://url_here.eu-west-1.compute.amazonaws.com:8080, make sure you are using the URL variable seen on the Spark UI for your spark://...:7070 command line argument