Apache flink(稳定版1.6.2)不起作用 [英] Apache flink (Stable version 1.6.2) does not work

问题描述

最近，发布了Apache flink的稳定版本(1.6.2).我阅读了此说明.但是当我运行以下命令时:

Recently, the stable version (1.6.2) of apache flink was released. I read this instruction. But when I run the following command:

./bin/flink run examples/streaming/SocketWindowWordCount.jar --port 9000

我收到以下错误:

 The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 264564a337d4c6705bde681b34010d28)
    at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)
    at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:486)
    at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)
    at org.apache.flink.streaming.examples.socket.SocketWindowWordCount.main(SocketWindowWordCount.java:92)
    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:426)
    at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:816)
    at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:290)
    at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:216)
    at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1053)
    at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1129)
    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:1836)
    at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
    at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1129)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
    at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)
    at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)
    ... 20 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.apache.flink.streaming.api.functions.source.SocketTextStreamFunction.run(SocketTextStreamFunction.java:96)
    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:94)
    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:58)
    at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:99)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300)
    at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
    at java.lang.Thread.run(Thread.java:748)

我找到了此链接:时，Flink程序无法提交.但是，它没有帮助.我尝试使用Flink 1.6.2 with Hadoop® 2.8以及mac os和ubuntu上的Flink 1.5.5 with Hadoop® 2.8.但是我也遇到了同样的错误.

I found this link:Flink program cannot submit when i follow flink-1.4's quickstart and use "./bin/flink run examples/streaming/SocketWindowWordCount.jar --port 9000". However, it didn't help. I tried with Flink 1.6.2 with Hadoop® 2.8 as well as Flink 1.5.5 with Hadoop® 2.8 on mac os and ubuntu. But I just got the same error.

推荐答案

我通过阅读nc -h(在Linux中)解决了烦人的问题:

I solved the annoying problem by reading the nc -h (in Linux):

connect to somewhere:   nc [-options] hostname port[s] [ports] ... 
listen for inbound: nc -l -p port [-options] [hostname] [port]

因此，要侦听端口，必须使用-p，我尝试了以下命令:

So for listening a port, -p is mandatory, and I tried the following command:

nc -l -p 9000

成功了.

这篇关于Apache flink(稳定版1.6.2)不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！