Hadoop commands

Usage: hadoop [--config confdir] COMMAND
where COMMAND is one of:

• namenode                     format format the DFS filesystem
• secondarynamenode     run the DFS secondary namenode
• namenode                     run the DFS namenode
• datanode                      run a DFS datanode
• dfsadmin                      run a DFS admin client
• fsck                             run a DFS filesystem checking utility
• fs                                 run a generic filesystem user client
• balancer                       run a cluster balancing utility
• jobtracker                    run the MapReduce job Tracker node
• pipes                            run a Pipes job
• tasktracker                   run a MapReduce task Tracker node
• job                               manipulate MapReduce jobs
• version                         print the version
• jar <jar>                       run a jar file
• distcp <srcurl> <desturl> copy file or directories recursively
• archive -archiveName NAME <src>* <dest> create a hadoop archive
• daemonlog                     get/set the log level for each daemon
• CLASSNAME              run the class named CLASSNAME