hadoop 单机节点安装
Execution
Format a new distributed-filesystem:
$ bin/hadoop namenode -format
Start the hadoop daemons:
$ bin/start-all.sh
The hadoop daemon log output is written to the?${HADOOP_LOG_DIR}?directory (defaults to?${HADOOP_HOME}/logs).
Browse the web interface for the NameNode and the JobTracker; by default they are available at:
Copy the input files into the distributed filesystem:
$ bin/hadoop fs -put conf input
Run some of the examples provided:
$ bin/hadoop jar hadoop-examples-*.jar grep input output 'dfs[a-z.]+'
Examine the output files:
Copy the output files from the distributed filesystem to the local filesytem and examine them:
$ bin/hadoop fs -get output output?
$ cat output/*
or
View the output files on the distributed filesystem:
$ bin/hadoop fs -cat output/*
When you're done, stop the daemons with:
$ bin/stop-all.sh
