Question

我试图运行连接到本地独立spark集群的java应用程序。我使用start-all.sh启动具有默认配置的集群。当我转到群集的网页时，它启动正常。我可以使用SparkR连接到此集群，但是当我使用相同的主URL从Java中进行连接时，我收到一条错误消息。

我使用的是Spark 1.5。

这是我的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);

以下是错误消息的片段：

ReliableDeliverySupervisor：与远程系统的关联 [akka.tcp：//sparkMaster@Ellens-MacBook-Pro.local：7077]失败了，地址现在为[5000] ms门控。理由：[Disocociated] 15/10/09 17:31:41 INFO AppClient $ ClientEndpoint：连接到master spark：//Ellens-MacBook-Pro.local：7077 ... 15/10/09 17:31:41警告 ReliableDeliverySupervisor：与远程系统的关联 [akka.tcp：//sparkMaster@Ellens-MacBook-Pro.local：7077]失败了，地址现在为[5000] ms门控。理由：[Disocociated] 15/10/09 17:32:01 INFO AppClient $ ClientEndpoint：连接到master spark：//Ellens-MacBook-Pro.local：7077 ... 15/10/09 17:32:01错误 SparkUncaughtExceptionHandler：线程中未捕获的异常螺纹[appclient注册重试线程，如图5所示，主] java.util.concurrent.RejectedExecutionException：任务 java.util.concurrent.FutureTask@54e2b678拒绝了 java.util.concurrent.ThreadPoolExecutor@5d9f3e0d [正在运行，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）
    at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)

以下是Spark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Spark版本不匹配造成的。确保在客户端和服务器上使用相同版本（包括使用提供的二进制版本之一时应为2.10的Scala版本）。

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

Answer 2

可以使用JavaSparkContext将Spark连接到本地。例如，这是构造函数之一：

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

从1.4开始引入JavaSparkContext：

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

这是一个类似于我工作的例子。我正在使用Maven。所以应用程序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：“我的应用程序”

Answer 3

我不确定这是否会有所帮助;我收到错误，无法连接到spark：// master：7077;而当我启动主/从时它向我展示了spark：//127.0.1.1：7077的火花大师。

所以我在/ etc / hosts中将“master”映射到127.0.1.1，并且它像魅力一样工作;它可以轻松找到sparkContext实例。

杰格

无法从Java应用程序连接到本地spark集群

3 个答案: