• Hadoop命令解释


    Usage: hadoop [--config confdir] COMMAND
    where COMMAND is one of:
      namenode -format     format the DFS filesystem(格式化DFS文件系统)
      secondarynamenode    run the DFS secondary namenode(运行第二个namenode)
      namenode             run the DFS namenode(运行namenode)
      datanode             run a DFS datanode(运行datenode)
      dfsadmin             run a DFS admin client(运行dfs的admin客户端)
      mradmin              run a Map-Reduce admin client(运行map-reduce的admin客户端)
      fsck                 run a DFS filesystem checking utility(运行文件系统检测工具)
      fs                   run a generic filesystem user client(运行普通的文件系统用户客户端)
      balancer             run a cluster balancing utility(运行集群负载均衡工具)
      fetchdt              fetch a delegation token from the NameNode
      jobtracker           run the MapReduce job Tracker node(运行jobtracker节点)
      pipes                run a Pipes job(运行管道job)
      tasktracker          run a MapReduce task Tracker node(运行tasktracker节点)
      historyserver        run job history servers as a standalone daemon
      job                  manipulate MapReduce jobs(处理job)
      queue                get information regarding JobQueues
      version              print the version(输出hadoop的版本)
      jar <jar>            run a jar file(运行一个jar文件)
      distcp <srcurl> <desturl> copy file or directories recursively(递归的复制文件或目录)
      archive -archiveName NAME -p <parent path> <src>* <dest> create a hadoop archive(生成Hadoop档案)
      classpath            prints the class path needed to get the
                           Hadoop jar and the required libraries(打印hadoop需要的jar或classpath)
      daemonlog            get/set the log level for each daemon(获取或设置每个daemon的日志级别)
    or
      CLASSNAME            run the class named CLASSNAME(运行指定类名的类)

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  • 原文地址:https://www.cnblogs.com/blueofsky/p/2749385.html
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