大数据系列12：Hadoop2 – 全新的Hadoop

wget http://mirrors.hust.edu.cn/apache/hadoop/common/stable2/hadoop-2.2.0.tar.gz

tar -xzvf hadoop-2.2.0.tar.gz

cd hadoop-2.2.0

vi etc/hadoop/hadoop-env.sh

修改：

export  JAVA_HOME=/home/ysc/jdk1.7.0_17

vi etc/hadoop/slaves

修改localhost为host001

vi etc/hadoop/core-site.xml

增加：

<property>

       <name>fs.defaultFS</name>

       <value>hdfs://host001:9000</value>

</property>

cp etc/hadoop/mapred-site.xml.template etc/hadoop/mapred-site.xml

vi etc/hadoop/mapred-site.xml

增加：

<property>

       <name>mapreduce.framework.name</name>

       <value>yarn</value>

</property>

<property>

       <name>mapreduce.cluster.local.dir</name>

       <value>/home/ysc/mapreduce/local</value>

</property>

vi etc/hadoop/yarn-site.xml

增加：

<property>

       <name>yarn.resourcemanager.hostname</name>  

       <value>host001</value>

</property>

<property>

       <name>yarn.nodemanager.aux-services</name> 

       <value>mapreduce_shuffle</value> 

</property>

vi etc/hadoop/hdfs-site.xml

增加：

<property>

       <name>dfs.name.dir</name>

       <value>/home/ysc/dfs/filesystem/name</value>

</property>

<property>

       <name>dfs.data.dir</name>

       <value>/home/ysc/dfs/filesystem/data</value>

</property>

<property>

       <name>dfs.replication</name>

       <value>3</value>

</property>

sudo vi /etc/profile

增加：

export  HADOOP_PREFIX=/home/ysc/hadoop-2.2.0

export  HADOOP_COMMON_HOME=/home/ysc/hadoop-2.2.0

export  HADOOP_MAPRED_HOME=/home/ysc/hadoop-2.2.0

export  HADOOP_CONF_DIR=/home/ysc/hadoop-2.2.0/etc/hadoop

export  HADOOP_HDFS_HOME=/home/ysc/hadoop-2.2.0

export  HADOOP_YARN_HOME=/home/ysc/hadoop-2.2.0

source /etc/profile

格式化：

bin/hdfs namenode -format

启动dfs：

sbin/start-dfs.sh

启动yarn：

sbin/start-yarn.sh

启动historyserver：

sbin/mr-jobhistory-daemon.sh start  historyserver

运行wordcount：

echo  "APDPlat is a java open source project,  Application Product Development Platform."  >  text1.txt

echo  "Yang Shangchuan is the founder of APDPlat which won the "2013 Outstanding Open Source Project" award."  >  text2.txt

bin/hadoop  fs  -mkdir input

bin/hadoop  fs  -put text1.txt  input

bin/hadoop  fs  -put text2.txt  input

bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar wordcount  input  output

访问管理页面：

ResourceManager: http://host001:8088

NodeManager: http://host001:8042  

NameNode:http://host001:50070

NameNode:http://host001:50070

 

停止dfs：

sbin/stop-dfs.sh

停止yarn：

sbin/stop-yarn.sh

停止historyserver：

sbin/mr-jobhistory-daemon.sh stop  historyserver

 

 注意：要把这里的主机host001和用户ysc替换为你自己的，在/etc/hosts文件中要把127.0.0.1 localhost改为实际IP地址 host001

 

 

 

 

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