获取以下错误“Datanode denied communication with namenode”同时配置hadoop 0.23.8 [英] Getting the following error "Datanode denied communication with namenode" while configuring hadoop 0.23.8

问题描述

我试图在我的macbook上配置hadoop 0.23.8，并运行以下例外：

I am trying to configure hadoop 0.23.8 on my macbook and am running in with the following exception

org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException: Datanode denied communication with namenode: 192.168.1.13:50010
at org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.registerDatanode(DatanodeManager.java:549)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.registerDatanode(FSNamesystem.java:2548)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.registerDatanode(NameNodeRpcServer.java:784)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:394)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1571)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1567)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1262)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1565)

我的core-site.xml看起来像这样

My core-site.xml looks like this

<configuration>
<property>
<name>dfs.federation.nameservices</name>
<value>ns1</value>
</property>

<property>
<name>dfs.namenode.rpc-address.ns1</name>
<value>192.168.1.13:54310</value>
</property>

<property>
<name>dfs.namenode.http-address.ns1</name>
<value>192.168.1.13:50070</value>
</property>

<property>
<name>dfs.namenode.secondary.http-address.ns1</name>
<value>192.168.1.13:50090</value>
</property>
</configuration>

任何关于我可能做错的想法？​​

Any ideas on what I may be doing wrong?

推荐答案

看起来像名字解析问题给我。可能的原因：

Looks like name resolution issue to me. Possible reasons :

Machine is listed in the file defined by dfs.hosts.exclude

dfs.hosts is used and the machine is not listed within that file

还要确保您的IP +主机名为该机器列在您的hosts文件中。

Also make sure you have IP+hostname of the machine listed in your hosts file.

HTH

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