如何安装伪分布式Hadoop

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安装伪分布式Hadoop
http://blog.csdn.net/ggz631047367/article/details/42426391
sudo vi /usr/local/hadoop/etc/hadoop/hadoop-env.sh
在hadoop-env.sh中 修改HADOOP_OPTS：
export HADOOP_OPTS="-Djava.library.path=$HADOOP_PREFIX/lib:$HADOOP_PREFIX/lib/native"
export HADOOP_OPTS="-Djava.library.path=$HADOOP_PREFIX/lib:$HADOOP_PREFIX/lib/native"

sudo gedit ~/.bashrc


#HADOOP VARIABLES START
export JAVA_HOME=/usr/java/jdk1.7.0_75
export HADOOP_INSTALL=/usr/local/hadoop
export PATH=$PATH:$HADOOP_INSTALL/bin
export PATH=$PATH:$HADOOP_INSTALL/sbin
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_HOME=$HADOOP_INSTALL
export HADOOP_HDFS_HOME=$HADOOP_INSTALL
export YARN_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib"
#HADOOP VARIABLES END

bin/hadoop jar share/hadoop/mapreduce/sources/hadoop-mapreduce-examples-2.7.1-sources.jar org.apache.hadoop.examples.WordCount input output


sudo vi /usr/local/hadoop/etc/hadoop/core-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/mapred-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/yarn-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/hdfs-site.xml




dfs.replication
1


dfs.namenode.name.dir
file:/usr/local/hadoop/dfs/name


dfs.datanode.data.dir
file:/usr/local/hadoop/dfs/data


dfs.permissions
false




sudo vi /usr/local/hadoop/etc/hadoop/masters 添加：localhost

sudo vi /usr/local/hadoop/etc/hadoop/slaves 添加：localhost

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