We are running Spark as Docker microservice. My spark application able to submit the tasks to worker node, but worker node is not able to connect to application, throwing UnknowHostException. Basically worker node trying to communicate with application with containerId(658e5d214a60) which is not getting resolved to container IP.
It is working when I run these services with docker-compose yaml files in local Linux machine but failing in AWS EC2 container.
Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1713)
at org.apache.spark.deploy.SparkHadoopUtil.runAsSparkUser(SparkHadoopUtil.scala:64)
at org.apache.spark.executor.CoarseGrainedExecutorBackend$.run(CoarseGrainedExecutorBackend.scala:188)
at org.apache.spark.executor.CoarseGrainedExecutorBackend$.main(CoarseGrainedExecutorBackend.scala:293)
at org.apache.spark.executor.CoarseGrainedExecutorBackend.main(CoarseGrainedExecutorBackend.scala)
Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult:
at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)
at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala:75)
at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:101)
at org.apache.spark.executor.CoarseGrainedExecutorBackend$$anonfun$run$1.apply$mcV$sp(CoarseGrainedExecutorBackend.scala:201)
at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:65)
at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:64)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698)
... 4 more
Caused by: java.io.IOException: Failed to connect to 658e5d214a60:36335
at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:245)
at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:187)
at org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:198)
at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:194)
at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:190)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: 658e5d214a60
at java.net.InetAddress.getAllByName0(InetAddress.java:1259)
at java.net.InetAddress.getAllByName(InetAddress.java:1171)
at java.net.InetAddress.getAllByName(InetAddress.java:1105)
at java.net.InetAddress.getByName(InetAddress.java:1055)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146)
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143)
at java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143)
at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:49)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:188)
at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:174)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:481)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:978)
at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:512)
at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:423)
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:482)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
... 1 more
Spark version 2.3.0
Docker version 1.12.6
Since the container port is dynamic we cant map it to host then use.
Related
I would like to use Spring Cloud Stream kinesis binder with KPL/KCL enabled. However, when I enabled that by using kpl-kcl-enabled: true the following error keeps coming up:
com.amazonaws.services.kinesis.producer.IrrecoverableError: Error starting child process at
com.amazonaws.services.kinesis.producer.Daemon.fatalError(Daemon.java:537) at
com.amazonaws.services.kinesis.producer.Daemon.startChildProcess(Daemon.java:468) at
com.amazonaws.services.kinesis.producer.Daemon.access$100(Daemon.java:63) at
com.amazonaws.services.kinesis.producer.Daemon$1.run(Daemon.java:133) 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:748)
Caused by: java.io.IOException: Cannot run program "/tmp/amazon-kinesis-producer-native-
binaries/kinesis_producer_685427917724EC847D7D65F261E7040F3FCCB039": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at
com.amazonaws.services.kinesis.producer.Daemon.startChildProcess(Daemon.java:466) ... 5 common frames omitted Caused by: java.io.IOException: error=2, No such file or directory at
java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.<init>(UNIXProcess.java:247) at java.lang.ProcessImpl.start(ProcessImpl.java:134) at
java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ... 6 common frames omitted
After quite a few attempts to restart it it throws out of memory exception:
Exception in thread "kpl-daemon-0000" java.lang.OutOfMemoryError: Java heap space
at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
at java.nio.ByteBuffer.allocate(ByteBuffer.java:335)
at com.amazonaws.services.kinesis.producer.Daemon.<init>(Daemon.java:95)
at com.amazonaws.services.kinesis.producer.KinesisProducer$MessageHandler.onError(KinesisProducer.java:168)
at com.amazonaws.services.kinesis.producer.Daemon.fatalError(Daemon.java:537)
at com.amazonaws.services.kinesis.producer.Daemon.startChildProcess(Daemon.java:468)
at com.amazonaws.services.kinesis.producer.Daemon.access$100(Daemon.java:63)
at com.amazonaws.services.kinesis.producer.Daemon$1.run(Daemon.java:133)
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:748)
KPL expects glibc in version 2.5 or higher to be available in your Linux version.
openjdk:8-jdk-alpine docker image does not provide that.
You need to use a different docker image, for example: openjdk:8-jdk-slim to have jdk and glibc already installed, or frolvlad/alpine-glibc for alpine image with glibc.
We currently develop a crawler using Nutch2 with an HBase backend. We create a plugin for the web parsers using Selenium web driver. Everything just fine in Nutch2 local mode. But, when we are trying to deploy it on the cluster using Nutch deploy mode, we got errors that stated "unable to parse successfully." Below are the errors.
java.util.concurrent.ExecutionException: java.lang.NoSuchFieldError:
INSTANCE
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:206)
at org.apache.nutch.parse.ParseUtil.runParser(ParseUtil.java:164)
at org.apache.nutch.parse.ParseUtil.parse(ParseUtil.java:146)
at org.apache.nutch.parse.ParserChecker.run(ParserChecker.java:142)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.nutch.parse.ParserChecker.main(ParserChecker.java:214)
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.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.(SSLConnectionSocketFactory.java:144)
at org.openqa.selenium.remote.internal.HttpClientFactory.getClientConnectionManager(HttpClientFactory.java:71)
at org.openqa.selenium.remote.internal.HttpClientFactory.(HttpClientFactory.java:57)
at org.openqa.selenium.remote.internal.HttpClientFactory.(HttpClientFactory.java:60)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.getDefaultHttpClientFactory(ApacheHttpClient.java:251)
at org.openqa.selenium.remote.internal.ApacheHttpClient$Factory.(ApacheHttpClient.java:228)
at org.openqa.selenium.remote.HttpCommandExecutor.getDefaultClientFactory(HttpCommandExecutor.java:96)
at org.openqa.selenium.remote.HttpCommandExecutor.(HttpCommandExecutor.java:70)
at org.openqa.selenium.remote.HttpCommandExecutor.(HttpCommandExecutor.java:58)
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:97)
at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:271)
at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:117)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:216)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:211)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:207)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:124)
at org.apache.nutch.store.readable.seleniumhandlers.HTTPWebClient$1.initialValue(HTTPWebClient.java:148)
at org.apache.nutch.store.readable.seleniumhandlers.HTTPWebClient$1.initialValue(HTTPWebClient.java:49)
at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:180)
at java.lang.ThreadLocal.get(ThreadLocal.java:170)
at org.apache.nutch.store.readable.seleniumhandlers.HTTPWebClient.getHtmlPage(HTTPWebClient.java:318)
at org.apache.nutch.store.readable.seleniumhandlers.HTTPWebClient.getHtmlPage(HTTPWebClient.java:309)
at org.apache.nutch.store.readable.parserhandlers.JsoupTokopedia.constructJson(JsoupTokopedia.java:108)
at org.apache.nutch.store.readable.StoreReadable.addJsonToPage(StoreReadable.java:349)
at org.apache.nutch.store.readable.StoreReadable.getParse(StoreReadable.java:311)
at org.apache.nutch.parse.ParseCallable.call(ParseCallable.java:36)
at org.apache.nutch.parse.ParseCallable.call(ParseCallable.java:23)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
It looks like Selenium won't work on Hadoop. I think this is the related issue click. Is it because Selenium can't run on Hadoop, or any suggestions on these issues?
I'm starting with Play Framework and when I'm sending the following commands, it throws a exception.
# play
In Play Console:
[play-java] $ run
It throws:
org.jboss.netty.channel.ChannelException: Failed to bind to: /0.0.0.0:9000
at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)
at play.core.server.NettyServer$$anonfun$10.apply(NettyServer.scala:171)
at play.core.server.NettyServer$$anonfun$10.apply(NettyServer.scala:168)
at scala.Option.map(Option.scala:145)
at play.core.server.NettyServer.<init>(NettyServer.scala:168)
at play.core.server.NettyServer$$anonfun$mainDev$1.apply(NettyServer.scala:347)
at play.core.server.NettyServer$$anonfun$mainDev$1.apply(NettyServer.scala:345)
at play.utils.Threads$.withContextClassLoader(Threads.scala:18)
at play.core.server.NettyServer$.mainDev(NettyServer.scala:344)
at play.core.server.NettyServer$.mainDevHttpMode(NettyServer.scala:340)
at play.core.server.NettyServer.mainDevHttpMode(NettyServer.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$1.apply(PlayRun.scala:233)
at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$1.apply(PlayRun.scala:91)
at scala.Function7$$anonfun$tupled$1.apply(Function7.scala:35)
at scala.Function7$$anonfun$tupled$1.apply(Function7.scala:34)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:463)
at sun.nio.ch.Net.bind(Net.java:455)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:366)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:290)
at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
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)
I'm trying using my local user, root user, changing ports (ie: run 8080), start instead of run, and it always throw the same exception.
By the way, port 9000 is not in use by another application.
Anyone has any clue?
I'm using Ubuntu 12.04 LTS, and Play Framework 2.2.6.
Thanks.
The error is that your port is being used by another process.
In a UNIX machine the command lsof -i:9000 will give the processes that are using the port.
As you have noted correctly processes with root permissions can be hidden if you use the terminal not as root
I have a 4-node cluster(hadoop 2.5.2) (Hbase 1.0.0) with a master(as salve) and 3 slaves on the master machine. After calling start-hbase.sh, the jps does not show the HRegionServer process running on the master but is ruuning fine on all the three slaves.
the log file on the master shows:
java.lang.RuntimeException: Failed construction of Regionserver: class org.apache.hadoop.hbase.regionserver.HRegionServer
at org.apache.hadoop.hbase.regionserver.HRegionServer.constructRegionServer(HRegionServer.java:2487)
at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:64)
at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:87)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
at org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2502)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.hbase.regionserver.HRegionServer.constructRegionServer(HRegionServer.java:2485)
... 5 more
Caused by: java.net.BindException: Problem binding to hadoopmaster.mst.edu/172.16.195.58:16020 : Address already in use
at org.apache.hadoop.hbase.ipc.RpcServer.bind(RpcServer.java:2371)
at org.apache.hadoop.hbase.ipc.RpcServer$Listener.<init>(RpcServer.java:524)
at org.apache.hadoop.hbase.ipc.RpcServer.<init>(RpcServer.java:1899)
at org.apache.hadoop.hbase.regionserver.RSRpcServices.<init>(RSRpcServices.java:790)
at org.apache.hadoop.hbase.regionserver.HRegionServer.createRpcServices(HRegionServer.java:575)
at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:492)
... 10 more
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.hadoop.hbase.ipc.RpcServer.bind(RpcServer.java:2369)
... 15 more
This is related to a number of issues in HBase 1.0.x: HBASE-11575, HBASE-13453 and HBASE-13479.
A workaround mentioned in this comment on HBASE-13479 is to manually configure the following ports in hbase-site.xml:
hbase.regionserver.port
hbase.master.info.port
hbase.regionserver.info.port
Upgrading to HBase 1.1.x is another option (worked for me).
I'm trying to implement the RMI Compute PI tutorial found on the Sun/Oracle website here. The server is located on an Amazon windows EC2 Server. The client is located on my personal computer at home. Just to keep things simple, I have disabled the firewall on the server and open all the port on the EC2 security group. I can ping the machine, have access to files, etc... My aim is just to have a basic RMI program worked on AWS. I will oversee security issues later.
Lauching the server is not a problem. And it's correctly bound to the RMI Registry. I'm using the following command to launch it :
java -Djava.security.manager -Djava.security.policy=C:\AWSTest\security.policy -Djava.rmi.server.codebase=file:/C:/AWS/Sources/sun-rmi-tutorial-server/bin/ file:/C:/AWS/Sources/sun-rmi-tutorial-common/bin/ -classpath C:\AWS\Sources\sun-rmi-tutorial-server\bin;C:\AWS\Sources\sun-rmi-tutorial-common\bin engine.ComputeEngine ec2-XX-XX-XX-XXX.ap-southeast-1.compute.amazonaws.com
The RMI registry is started on the server side.
I have declared a new security manager on the server side System.setSecurityManager(new RMISecurityManager())
I'm using a security.policy file where I'm granted all permission.
When I'm launching the client side, on my local computer, I'm ending with an UnmarshalException:
ComputePi exception: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: engine.ComputeEngine_Stub
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: engine.ComputeEngine_Stub
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Naming.java:101)
at client.ComputePi.main(ComputePi.java:14)
Caused by: java.lang.ClassNotFoundException: engine.ComputeEngine_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:453)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:184)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:216)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1593)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1750)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
... 3 more
Do you have any suggestions of what is wrong ? Why can't the client find the correct Stub ? I'm using Eclipse Juno, Genady RMI Plugin and Java 1.7.0_07.
Thanks for your help
EDIT 1 :
The Java workspace is organized around 3 projects : the Client side, the Server Side and a Common project where both the server and the client share classes.
I can read the remote registry from my local computer. The RMI plugin can connect remotely to the server and inspect the registry.
If instead of making 3 projects I put all the classes under the same project, everything is working fine... But I notice that no stubs where generated (or needed).
If, on the client side, I'm putting a reference in the classpath to the server classes (everything being build locally), i have a connection timeout error instead of the unmarshalling error.
ComputePi exception: Connection refused to host: XX.XXX.XX.XX; nested exception is:
java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: XX.XXX.XXX; nested exception is:
java.net.ConnectException: Connection timed out: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:128)
at engine.ComputeEngine_Stub.executeTask(ComputeEngine_Stub.java:35)
at client.ComputePi.main(ComputePi.java:19)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.(Socket.java:425)
at java.net.Socket.(Socket.java:208)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
... 5 more
You haven't deployed the stub class to the client.