- hdfs dfs -#arg
- ls #List home directory
- ls . #List current directory
- ls / #List root directory
- cp #Copy files
- file:///dir
- hdfs://server:port_num/dir
- cat #Display content of file
- chgrp
- chmod
- chown
- du
- mkdir #Create directory under home directory
- mv
- rm #Remove directory and contents
- stat
- tail
- copyFromLocal OR put
- copyToLocal OR get
- getmerge #Get files in directors and merge them into single local file
- setrep #Override default level of replication (-R for entire tree)
- hdfs dfsadmin -report #Check health status of cluster (e.g. amount of space on each DataNode)
https://youtu.be/LtGliUam-_U
- core-site.xml #Parameters for HDFS and MapReduce
- hdfs-site.xml #Parameters for HDFS daemons (NameNode and DataNodes)
- mapred-site.xml #Parameters for MapReduce daemons, JobTracker and TaskTrackers
- JAVA_HOME #Set to java SDK