我有一个简单的spark作业，它在给定的输入文件中用逗号替换空格。
当此作业在本地提交时（使用IDE并执行构建的jar），它成功完成，当主控设置为"yarn client"时，该作业将挂起很长一段时间，并引发以下异常。
我们有一个用例，我们希望以程序方式提交作业，而不是构建一个jar并通过spark-submit提交。
Spark版本：1.6.1Hadoop版本：2.7.1
我在pom中获得了所有的spark、yarn和hadoop依赖项。
由于以下异常，作业失败
java.net.ConnectException: Call From spark.node123.com/192.168.2.1 to 0.0.0.0:8032 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.GeneratedConstructorAccessor13.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732)
at org.apache.hadoop.ipc.Client.call(Client.java:1480)
at org.apache.hadoop.ipc.Client.call(Client.java:1407)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy10.getClusterMetrics(Unknown Source)
at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getClusterMetrics(ApplicationClientProtocolPBClientImpl.java:152)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy11.getClusterMetrics(Unknown Source)
at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getYarnClusterMetrics(YarnClientImpl.java:246)
at org.apache.spark.deploy.yarn.Client$$anonfun$submitApplication$1.apply(Client.scala:129)
at org.apache.spark.deploy.yarn.Client$$anonfun$submitApplication$1.apply(Client.scala:129)
at org.apache.spark.Logging$class.logInfo(Logging.scala:58)
at org.apache.spark.deploy.yarn.Client.logInfo(Client.scala:62)
at org.apache.spark.deploy.yarn.Client.submitApplication(Client.scala:128)
at org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:57)
at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:144)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:530)
at tardis.platform.TardisContext$.apply(TardisContext.scala:20)
at tardis.common.plugins.Heartbeat.isAbleTocreateContext(Heartbeat.scala:45)
at tardis.common.plugins.Heartbeat.performAction(Heartbeat.scala:33)
at tardis.core.scheduler.jobs.PluginExecutorJob.execute(PluginExecutorJob.scala:40)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:609)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:707)
at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:370)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529)
at org.apache.hadoop.ipc.Client.call(Client.java:1446)
... 25 more
我必须添加hadoop和yarn配置才能在yarn客户端模式下成功提交应用程序。
您不能在客户端模式下远程提交您的spark作业，因为您的计算机必须运行驱动程序本身，这需要大量连接。如果你坚持使用这种方法，你必须配置防火墙，允许一些端口连接到集群。使用集群模式或从主节点提交它的痛苦要小得多。