【Flink-HDFS】Call From * to * failed on connection exception: java.net.ConnectException: 拒绝连接；-Toy模板网

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Flink-Hadoop分布式集群模式运行WordCount示例报错

记录一下Flink-Hadoop分布式集群模式运行WordCount示例报错的经历

指令和报错信息

指令

flink run /usr/local/flink/flink-1.7.2/examples/batch/WordCount.jar --input hdfs://192.168.87.135:8020/usr/d0228/1.input --output hdfs://192.168.87.135:8020/usr/d0228/1.output

运行flink，尝试读取hdfs上的文件，并输出到hdfs里

报错信息

主要就是这几条报错

Could not retrieve the execution result.
Could not set up JobManager
Call From localhost-node1/192.168.87.133 to localhost-node2:8020 failed on connection exception: java.net.ConnectException: 拒绝连接;

这个第三条大概意思是node1虚拟机连不到hadoop那个端口上。

解决方法

查看端口号

查看hadoop文件下etc/hadoop里的core-site.xml文件
failed on connection exception: java.net.connectexception: 拒绝连接; for mor,成长体会,hdfs,java,hadoop,flink
红框里我之前配置的端口是9000，所以我把指令里之前的8020改成9000就ok了

修改后的指令：
flink run /usr/local/flink/flink-1.7.2/examples/batch/WordCount.jar --input hdfs://192.168.87.135:9000/usr/d0228/1.input --output hdfs://192.168.87.135:9000/usr/d0228/1.output

关闭HDFS集群权限校验

查看hadoop文件下etc/hadoop里的hdfs-site.xml文件,在对应位置添加红框里的内容。好像和文件权限有关。记得分发到所有虚拟机上，统一配置。
failed on connection exception: java.net.connectexception: 拒绝连接; for mor,成长体会,hdfs,java,hadoop,flink

我在经过这两个更改后就可以顺利执行WordCount示例，并且在HDFS上有输出的文件。

完整报错信息

下面是完整的报错信息：文章来源地址https://www.toymoban.com/news/detail-771156.html

root@localhost-node1 bin]# flink run /usr/local/flink/flink-1.7.2/examples/batch/WordCount.jar --input hdfs://192.168.87.135:8020/usr/d0228/1.input --output hdfs://192.168.87.135:8020/usr/d0228/1.output
Starting execution of program

------------------------------------------------------------
 The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Could not retrieve the execution result. (JobID: 42c079d08bb4bce07e65f31c0b090baf)
	at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:261)
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:475)
	at org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:62)
	at org.apache.flink.examples.java.wordcount.WordCount.main(WordCount.java:85)
	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:498)
	at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)
	at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)
	at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)
	at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)
	at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)
	at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)
	at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)
Caused by: org.apache.flink.runtime.client.JobSubmissionException: Failed to submit JobGraph.
	at org.apache.flink.client.program.rest.RestClusterClient.lambda$submitJob$8(RestClusterClient.java:380)
	at java.util.concurrent.CompletableFuture.uniExceptionally(CompletableFuture.java:884)
	at java.util.concurrent.CompletableFuture$UniExceptionally.tryFire(CompletableFuture.java:866)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$5(FutureUtils.java:203)
	at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
	at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:575)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:943)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:456)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.runtime.rest.util.RestClientException: [Internal server error., <Exception on server side:
org.apache.flink.runtime.client.JobSubmissionException: Failed to submit job.
	at org.apache.flink.runtime.dispatcher.Dispatcher.lambda$submitJob$2(Dispatcher.java:267)
	at java.util.concurrent.CompletableFuture.uniExceptionally(CompletableFuture.java:884)
	at java.util.concurrent.CompletableFuture$UniExceptionally.tryFire(CompletableFuture.java:866)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:575)
	at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:753)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:456)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:332)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:158)
	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:70)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.onReceive(AkkaRpcActor.java:142)
	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.onReceive(FencedAkkaRpcActor.java:40)
	at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:165)
	at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
	at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
	at akka.actor.ActorCell.invoke(ActorCell.scala:495)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
	at akka.dispatch.Mailbox.run(Mailbox.scala:224)
	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.RuntimeException: org.apache.flink.runtime.client.JobExecutionException: Could not set up JobManager
	at org.apache.flink.util.function.CheckedSupplier.lambda$unchecked$0(CheckedSupplier.java:36)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
	at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)
	... 4 more
Caused by: org.apache.flink.runtime.client.JobExecutionException: Could not set up JobManager
	at org.apache.flink.runtime.jobmaster.JobManagerRunner.<init>(JobManagerRunner.java:176)
	at org.apache.flink.runtime.dispatcher.Dispatcher$DefaultJobManagerRunnerFactory.createJobManagerRunner(Dispatcher.java:1058)
	at org.apache.flink.runtime.dispatcher.Dispatcher.lambda$createJobManagerRunner$5(Dispatcher.java:308)
	at org.apache.flink.util.function.CheckedSupplier.lambda$unchecked$0(CheckedSupplier.java:34)
	... 7 more
Caused by: org.apache.flink.runtime.client.JobExecutionException: Cannot initialize task 'DataSink (CsvOutputFormat (path: hdfs://192.168.87.135:8020/usr/d0228/1.output, delimiter:  ))': Call From localhost-node1/192.168.87.133 to localhost-node2:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
	at org.apache.flink.runtime.executiongraph.ExecutionGraphBuilder.buildGraph(ExecutionGraphBuilder.java:220)
	at org.apache.flink.runtime.executiongraph.ExecutionGraphBuilder.buildGraph(ExecutionGraphBuilder.java:100)
	at org.apache.flink.runtime.jobmaster.JobMaster.createExecutionGraph(JobMaster.java:1173)
	at org.apache.flink.runtime.jobmaster.JobMaster.createAndRestoreExecutionGraph(JobMaster.java:1153)
	at org.apache.flink.runtime.jobmaster.JobMaster.<init>(JobMaster.java:296)
	at org.apache.flink.runtime.jobmaster.JobManagerRunner.<init>(JobManagerRunner.java:157)
	... 10 more
Caused by: java.net.ConnectException: Call From localhost-node1/192.168.87.133 to localhost-node2:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
	at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732)
	at org.apache.hadoop.ipc.Client.call(Client.java:1480)
	at org.apache.hadoop.ipc.Client.call(Client.java:1413)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
	at com.sun.proxy.$Proxy34.getFileInfo(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:776)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
	at com.sun.proxy.$Proxy35.getFileInfo(Unknown Source)
	at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:2117)
	at org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1305)
	at org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1301)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1317)
	at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1425)
	at org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.exists(HadoopFileSystem.java:152)
	at org.apache.flink.core.fs.FileSystem.initOutPathDistFS(FileSystem.java:886)
	at org.apache.flink.api.common.io.FileOutputFormat.initializeGlobal(FileOutputFormat.java:286)
	at org.apache.flink.runtime.jobgraph.OutputFormatVertex.initializeOnMaster(OutputFormatVertex.java:89)
	at org.apache.flink.runtime.executiongraph.ExecutionGraphBuilder.buildGraph(ExecutionGraphBuilder.java:216)
	... 15 more
Caused by: java.net.ConnectException: 拒绝连接
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:715)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
	at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:615)
	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:713)
	at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:376)
	at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529)
	at org.apache.hadoop.ipc.Client.call(Client.java:1452)
	... 37 more

End of exception on server side>]
	at org.apache.flink.runtime.rest.RestClient.parseResponse(RestClient.java:380)
	at org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$3(RestClient.java:364)
	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:966)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940)
	... 4 more

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