无法从Java应用程序连接到本地星火群集

Question

我正在尝试运行一个连接到本地独立星火集群的java应用程序。我用默认配置启动集群，使用start-all.sh。当我转到群集的网页时，就可以启动它了。我可以使用SparkR连接到这个集群，但是当我使用同一个主URL从Java内部连接时，我会收到一条错误消息。

我用的是火花1.5。

以下是我的Java代码：

SparkConf conf = new SparkConf();
conf.setAppName("test");
conf.setMaster("spark://Ellens-MacBook-Pro.local:7077");
conf.setSparkHome("/Applications/spark-1.5.0-bin-hadoop2.6");
SparkContext sc = new SparkContext(conf);

下面是错误消息的片段：

akka.tcp://sparkMaster@Ellens-MacBook-Pro.local:7077与远程系统ReliableDeliverySupervisor的关联失败了，地址现在为5000毫秒的门限。原因:// 15/10/09 17:31:41 INFO AppClient$ClientEndpoint:连接主火花://Ellens Pro.local:7077.15/10/09 17:31:41警告akka.tcp://sparkMaster@Ellens-MacBook-Pro.local:7077 :与远程系统ReliableDeliverySupervisor的关联失败了，地址现在被设置为5000 ms。原因:取消15/10/09 17:32:01信息应用客户端$ClientEndpoint:连接到主火花://Ellens Pro.local:7077.15/10/09 17:32:01错误SparkUncaughtExceptionHandler:线程线程中的未登录异常-注册-重试-线程，5，主java.util.concurrent.ThreadPoolExecutor@5d9f3e0dRunning，任务java.util.concurrent.FutureTask@54e2b678拒绝从java.util.concurrent.ThreadPoolExecutor@5d9f3e0dRunning，池大小= 1，活动线程= 1，排队任务= 0，完成任务=2在java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047) 在java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)

以下是星火日志中的输出：

Spark Command: /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/bin/java -cp /Applications/spark-1.5.0-bin-hadoop2.6/sbin/../conf/:/Applications/spark-1.5.0-bin-hadoop2.6/lib/spark-assembly-1.5.0-hadoop2.6.0.jar:/Applications/spark-1.5.0-bin-hadoop2.6/lib/datanucleus-api-jdo-3.2.6.jar:/Applications/spark-1.5.0-bin-hadoop2.6/lib/datanucleus-core-3.2.10.jar:/Applications/spark-1.5.0-bin-hadoop2.6/lib/datanucleus-rdbms-3.2.9.jar -Xms1g -Xmx1g org.apache.spark.deploy.master.Master --ip Ellens-MacBook-Pro.local --port 7077 --webui-port 8080
========================================
15/10/12 17:56:43 INFO Master: Registered signal handlers for [TERM, HUP, INT]
15/10/12 17:56:43 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
15/10/12 17:56:43 INFO SecurityManager: Changing view acls to: ellenk
15/10/12 17:56:43 INFO SecurityManager: Changing modify acls to: ellenk
15/10/12 17:56:43 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(ellenk); users with modify permissions: Set(ellenk)
15/10/12 17:56:44 INFO Slf4jLogger: Slf4jLogger started
15/10/12 17:56:44 INFO Remoting: Starting remoting
15/10/12 17:56:44 INFO Remoting: Remoting started; listening on addresses :[akka.tcp://sparkMaster@Ellens-MacBook-Pro.local:7077]
15/10/12 17:56:44 INFO Utils: Successfully started service 'sparkMaster' on port 7077.
15/10/12 17:56:44 INFO Master: Starting Spark master at spark://Ellens-MacBook-Pro.local:7077
15/10/12 17:56:44 INFO Master: Running Spark version 1.5.0
15/10/12 17:56:44 INFO Utils: Successfully started service 'MasterUI' on port 8080.
15/10/12 17:56:44 INFO MasterWebUI: Started MasterWebUI at http://192.168.1.3:8080
15/10/12 17:56:44 INFO Utils: Successfully started service on port 6066.
15/10/12 17:56:44 INFO StandaloneRestServer: Started REST server for submitting applications on port 6066
15/10/12 17:56:45 INFO Master: I have been elected leader! New state: ALIVE
15/10/12 17:56:50 INFO Master: Registering worker 192.168.1.3:57180 with 8 cores, 15.0 GB RAM
15/10/12 17:57:23 WARN ReliableDeliverySupervisor: Association with remote system [akka.tcp://sparkDriver@192.168.1.3:57238] has failed, address is now gated for [5000] ms. Reason: [null] 
15/10/12 17:57:23 INFO Master: 192.168.1.3:57238 got disassociated, removing it.
15/10/12 17:57:43 ERROR Remoting: 
java.io.OptionalDataException
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1371)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:366)
    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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at akka.serialization.JavaSerializer$$anonfun$1.apply(Serializer.scala:136)
    at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
    at akka.serialization.JavaSerializer.fromBinary(Serializer.scala:136)
    at akka.serialization.Serialization$$anonfun$deserialize$1.apply(Serialization.scala:104)
    at scala.util.Try$.apply(Try.scala:161)
    at akka.serialization.Serialization.deserialize(Serialization.scala:98)
    at akka.remote.MessageSerializer$.deserialize(MessageSerializer.scala:23)
    at akka.remote.DefaultMessageDispatcher.payload$lzycompute$1(Endpoint.scala:58)
    at akka.remote.DefaultMessageDispatcher.payload$1(Endpoint.scala:58)
    at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:76)
    at akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:935)
    at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
    at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:411)
    at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
    at akka.actor.ActorCell.invoke(ActorCell.scala:487)
    at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
    at akka.dispatch.Mailbox.run(Mailbox.scala:220)
    at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
    at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
    at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
    at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
    at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
15/10/12 17:57:43 INFO Master: 192.168.1.3:57238 got disassociated, removing it.
15/10/12 17:58:03 INFO Master: 192.168.1.3:57238 got disassociated, removing it.
15/10/12 17:58:03 WARN ReliableDeliverySupervisor: Association with remote system [akka.tcp://sparkDriver@192.168.1.3:57238] has failed, address is now gated for [5000] ms. Reason: [Disassociated] 
15/10/12 17:58:03 INFO Master: 192.168.1.3:57238 got disassociated, removing it.
15/10/12 17:58:03 INFO Master: 192.168.1.3:57238 got disassociated, removing it.
15/10/12 17:58:03 INFO Master: 192.168.1.3:57238 got disassociated, removing it.

Answer 1

这很可能是由于星火版本错配造成的。确保在客户端和服务器上使用相同版本(如果使用的是所提供的二进制构建之一的Scala版本应该是2.10 )。

此外，如果您在客户端应用程序中使用akka，则应确保它与Spark (2.3.4+)使用的应用程序兼容。

Answer 2

火花可以使用JavaSparkContext连接到本地。例如，这里有一个构造函数：

JavaSparkContext(String master, String appName, String sparkHome, String[] jars) 

JavaSparkContext是在1.4岁时引入的：

https://spark.apache.org/docs/1.4.0/api/java/org/apache/spark/api/java/JavaSparkContext.html

下面是一个类似于我所做工作的例子。我在用Maven。因此应用程序jar是在目标目录下创建的：

public JavaSparkContext getJavaSparkContext(String myAppName ) {
    // Based on example above:
    String sparkHome="/Applications/spark-1.5.0-bin-hadoop2.6"; 
    JavaSparkContext sc = new JavaSparkContext("local", myAppName,
            sparkHome, new String[]{"target/sparkapp-0.0.1-SNAPSHOT.jar"});
    return sc;

}

参数myAppName只是一个字符串，例如："My“

Answer 3

我不确定这是否有帮助；我遇到了无法连接到sure :// master :7077的错误；而当我启动主从时，它向我展示了火花主://127.0.1.1:7077。

因此，我将"master“映射到/etc/host中的127.0.1.1，瞧，它工作起来很有魅力；它可以很容易地找到sparkContext实例。

捷豹