java - 在hadoop中启动namenode失败？

Question

我在 Windows 7 中配置 Hadoop from tutorial它建立了一个单节点集群。运行时hdfs namenode -format格式化namenode它抛出异常，如:而当start-all.cmd windows namenode 自动强制然后我可以在地址中打开 namenode GUI - http://localhost:50070 .

16/01/19 15:18:58 WARN namenode.FSEditLog: No class configured for C, dfs.namenode.edits.journal-plugin.C is empty<br/>
16/01/19 15:18:58 ERROR namenode.NameNode: Failed to start namenode. java.lang.IllegalArgumentException: No class configured for C at org.apache.hadoop.hdfs.server.namenode.FSEditLog.getJournalClass(FSEditLog.java:1615) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.createJournal(FSEditLog.java:1629) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournals(FSEditLog.java:282) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournalsForWrite(FSEditLog.java:247) at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:985) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1429) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1554) 16/01/19 15:18:58 INFO util.ExitUtil: Exiting with status 1 16/01/19 15:18:58 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************

核心站点.xml

<configuration>
    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://localhost:9000</value>
    </property>
</configuration>   

hdfs-site.xml

<configuration>
   <property>
       <name>dfs.replication</name>
       <value>1</value>
   </property>
   <property>
       <name>dfs.namenode.name.dir</name>
       <value>C:/hadoop/data/namenode</value>
   </property>
   <property>
       <name>dfs.datanode.data.dir</name>
       <value>C:/hadoop/data/datanode</value>
   </property>
</configuration>

mapred-site.xml

<configuration>
    <property>
       <name>mapreduce.framework.name</name>
       <value>yarn</value>
    </property>
</configuration>

yarn-site.xml

<configuration>
   <property>
       <name>yarn.nodemanager.aux-services</name>
       <value>mapreduce_shuffle</value>
   </property>
   <property>
       <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
       <value>org.apache.hadoop.mapred.ShuffleHandler</value>
   </property>
</configuration>

Answer 1

更改以下属性:

<property>
   <name>dfs.namenode.name.dir</name>
   <value>C:/hadoop/data/namenode</value>
</property>
<property>
   <name>dfs.datanode.data.dir</name>
   <value>C:/hadoop/data/datanode</value>
</property>

收件人:

<property>
   <name>dfs.namenode.name.dir</name>
   <value>/hadoop/data/namenode</value>
</property>
<property>
   <name>dfs.datanode.data.dir</name>
   <value>/hadoop/data/datanode</value>
</property>