Ubuntu Install hadoop2.x (pseudo-distributed)

Next: Ubuntu installation hadoop1.x (pseudo-distributed)

1.x and 2.x in the installation of small differences, is the program directory is not the same.

hadoop1.x and 2.x part correspondence relationship

	1.x	2.x
Core-site.xml	${hadoop_home}/conf/core-site.xml	${hadoop_home}/etc/hadoop/core-site.xml
Hdfs-site.xml	${hadoop_home}/conf/hdfs-site.xml	${hadoop_home}/etc/hadoop/hdfs-site.xml
Namenode format	${hadoop_home}/bin/hadoop Namenode-format	${hadoop_home}/bin/hdfs Namenode-format
start-dfs.sh	${hadoop_home}/bin/start-dfs.sh	${hadoop_home}/sbin/start-dfs.sh
stop-dfs.sh	${hadoop_home}/bin/stop-dfs.sh	${hadoop_home}/sbin/star-dfs.sh
Example.jar	${hadoop_home}/hadoop-examples-1.x.x.jar	${hadoop_home}/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.x.x.jar
WordCount	$ cd ${hadoop_home} $ bin/hadoop jar Hadoop-examples-1.2.1.jar wordcount Input Output	$ cd ${hadoop_home} $ bin/hadoop jar Share/hadoop/mapreduce/hadoop-mapreduce-examples-2.x.x.jar Org.apache.hadoop.examples.WordCount Input Output
Mapreduce	Pending additions	Pending additions
Other	Pending additions	Pending additions

Note

2.x after the installation is complete, the DFS command is reported as a warn

15/04/24 15:35:53 WARN util. nativecodeloader:unable to load Native-hadoop library for your platform ... using Builtin-java classes where applicable
This does not affect. There are also specific solutions on the Web.

Ubuntu Install hadoop2.x (pseudo-distributed)