Question

I am using Hadoop hadoop-2.6.0, while starting hadoop services unable to start secondarynamenode, datanode, nodemanager services.
Getting Java.net.bind exceptions.

节点管理器：

org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.BindException: Problem binding to [0.0.0.0:8040] java.net.BindException: Address already in use; For more details see:  http://wiki.apache.org/hadoop/BindException
    at org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.getServer(RpcServerFactoryPBImpl.java:139)
    at org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC.getServer(HadoopYarnProtoRPC.java:65)
    at org.apache.hadoop.yarn.ipc.YarnRPC.getServer(YarnRPC.java:54)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.createServer(ResourceLocalizationService.java:356)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.serviceStar

的NameNode：

2017-10-10 23:58:07,872 INFO org.apache.hadoop.http.HttpServer2: HttpServer.start() threw a non Bind IOException
java.net.BindException: Port in use: 0.0.0.0:50090
    at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:891)
    at org.apache.hadoop.http.HttpServer2.start(HttpServer2.java:827)
    at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:276)
    at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:192)
    at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:671)

DataNode：

java.net.BindException: Problem binding to [0.0.0.0:50010] java.net.BindException: Address already in use; For more details see:  http://wiki.apache.org/hadoop/BindException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)

在尝试使用netstat -ntpl命令时，以下端口已在使用中

tcp        0      0 0.0.0.0:50010           0.0.0.0:*               LISTEN      -               
tcp        0      0 0.0.0.0:50090           0.0.0.0:*               LISTEN      -             
tcp6       0      0 :::8040                 :::*                    LISTEN      -

请有人建议我如何杀死这些端口以解决此问题。

:~/hadoopinstall/hadoop-2.6.0$ jps
18255 org.eclipse.equinox.launcher_1.3.0.dist.jar
27492 RunJar
12387 Jps
11951 ResourceManager
11469 NameNode

Answer 1

您提供的netstat命令还会显示正在侦听该端口的进程的PID。

例如

[root@dn1 ~]# netstat -ntpl | grep 50010
tcp        0      0 0.0.0.0:50010           0.0.0.0:*               LISTEN      1093/java

在上面的例子中，1093是绑定50010端口的java进程的PID。

您可以轻松检查正在运行的进程，如果您拥有正确的权限，也可以使用该命令终止进程。

kill -9 1093

Answer 2

经常搜索/尝试后，我找到了解决方案来杀死没有pid的进程（端口）。

modify

现在我可以开始所有的hadoop服务了。

*******@127:~$ sudo fuser -k 50010/tcp
[sudo] password for muralee1857: 
50010/tcp:            1514
*******@127:~$ sudo kill -9 $(lsof -t -i:50010)
*******@127:~$ sudo fuser -k 50010/tcp
*******@127:~$ sudo kill -9 $(lsof -t -i:50090)
*******@127:~$ sudo fuser -k 50090/tcp
50090/tcp:            2110
*******@127:~$ sudo kill -9 $(lsof -t -i:50090)
*******@127:~$ sudo fuser -k 50090/tcp
*******@127:~$ sudo fuser -k 8040/tcp
8040/tcp:             2304
*******@127:~$ sudo kill -9 $(lsof -t -i:8040)
*******@127:~$ sudo fuser -k 8040/tcp

启动hadoop

2 个答案: