Question

我无法创建新文件或目录，也无法列出现有文件或目录

我正在使用以下命令进行操作，请你建议

 hduser@c:/usr/local/hadoop$ jps
8546 ResourceManager
9181 Jps
1503 NameNode
8674 NodeManager
4398 DataNode
hduser@c:/usr/local/hadoop$ bin/hadoop fs -ls /
ls: Couldn't create proxy provider null
hduser@c:/usr/local/hadoop$ bin/hadoop fs -mkdir /books
mkdir: Couldn't create proxy provider null
hduser@c:/usr/local/hadoop$

下面是我的hdfs-site.xml，我正在使用它。

<configuration>
    <property>
    <name>dfs.nameservices</name>
    <value>mycluster</value>
    </property>

<property>
<name>dfs.replicaion</name>
<value>2</value>
<description>to specifiy replication</description>
</property>

<property>
<name>dfs.namenode.name.dir</name>
<value>file:/h3iHA/name</value>
<final>true</final>
</property>

<property>
<name>dfs.datanode.data.dir</name>
<value>file:/h3iHA/data2</value>
<final>true</final>
</property>

<property>
<name>dfs.ha.namenodes.mycluster</name>
<value>nn1,nn2</value>
</property>

<property>
<name>dfs.namenode.rpc-address.mycluster.nn1</name>
<value>c:9000</value>
</property>

<property>
<name>dfs.namenode.rpc-address.mycluster.nn2</name>
<value>a:9000</value>
</property>

<property>
<name>dfs.namenode.http-address.mycluster.nn1</name>
<value>c:50070</value>
</property>

<property>
<name>dfs.namenode.http-address.mycluster.nn2</name>
<value>a:50070</value>
</property>

<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>file:///mnt/filer</value>
</property>

<property>
<name>dfs.client.failover.proxy.provider.mycluster</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.configuredFailoverProxyProvider</value>
</property>

<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>

<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/home/hduser/.ssh/id_rsa</value>
</property>

<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence
       shell(/bin/true)
</value>
</property>
</configuration>

核心文件，两个节点都相同

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://mycluster</value>
</property>
</configuration>

Answer 1

为属性dfs.client.failover.proxy.provider.mycluster设置的Java类名称不正确。它是 ConfiguredFailoverProxyProvider 而不是 configuredFailoverProxyProvider 。

在hdfs-site.xml

中修改此媒体资源的价值

<property>
  <name>dfs.client.failover.proxy.provider.mycluster</name>
  <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>

hadoop 2.6.2，mkdir：无法创建代理提供程序null

1 个答案: