Question

我无法在hadoop fs -ls /命令中查看HDFS中的文件，我认为这是因为名称节点没有运行。我尝试格式化namenode以及更改核心站点中的端口.xml到不同的值。还没有我的JPS列出NameNode。

以下是文件： 1）芯的site.xml

               <configuration>
                       <property>
                       <name>hadoop.tmp.dir</name>
                       <value>/home/hduser/tmp</value>
                      <description>A base for other temporary directories.</description>
                        </property>
                         <property>
                         <name>fs.default.name</name>
                          <value>hdfs://localhost:50000</value>
                           <description>The name of the default file system. A URI whose
                          scheme and authority determine the FileSystem implementation. The
                          uri’s scheme determines the config property (fs.SCHEME.impl) naming
                           the FileSystem implementation class. The uri’s authority is used to
                                 determine the host, port, etc. for a filesystem.</description>
    </property>
    </configuration>

2）HDFS-site.sml

    <configuration>
                          <property>
                           <name>dfs.replication</name>
                              <value>1</value>
                              <description>Default block replication.
    The actual number of replications can be specified when the file is created.
    The default is used if replication is not specified in create time.
    </description>
    </property>
    <property>
         <name>dfs.name.dir</name>
        <value>/home/hduser/hadoop-1.2.1/data</value>
    </property>
    </configuration>

3）mapred-site.xml中

                      <configuration>
                   <property>
         <name>mapred.job.tracker</name>
                           <value>localhost:54311</value>
             <description>The host and port that the MapReduce job tracker runs
                                 at. If “local”, then jobs are run in-process as a single map
                                 and reduce task.
                               </description>
                           </property>
                           </configuration>

JPS输出是：

21043 JobTracker

21147 TaskTracker

21789 Jps

20839 DataNode

20957 SecondaryNameNode

有人可以帮忙吗？

Answer 1

如果再次发生相同的问题，然后通过 rm -rf tmp / 从tmp文件夹中删除所有内容，然后格式化namenode，则应该启动它。或者您也可以尝试恢复namenode bin / hdfs namenode -recover

NameNode不以伪分布式模式启动

1 个答案: