1. eclipse配置连接hadoop

将hadoop的plugins包，拷贝到eclipse的plugins目录下。管理员启动eclipse

在eclipse的windows下，preferences，找到Hadoop Map/Reduce，添加hadoop安装目录。即可。

在eclipse下，选windows，show view下，将map/reduce location调出来。 右击添加，具体端口参考配置文件。

# vim /opt/hadoop-2.6.0/etc/hadoop/core-site.xml

<configuration>
 <property>
 <name>hadoop.tmp.dir</name>
 <value>file:/opt/hadoop-2.6.0/tmp</value>
 <description>Abase for other temporary directories.</description>
 </property>
 <property>
 <name>fs.defaultFS</name>
 <value>hdfs://192.168.208.110:9000</value>
 </property>
</configuration>

# vim /opt/hadoop-2.6.0/etc/hadoop/hdfs-site.xml

<configuration>
 <property>
 <name>dfs.replication</name>
 <value>1</value>
 </property>
 <property>
 <name>dfs.namenode.name.dir</name>
 <value>file:/opt/hadoop-2.6.0/tmp/dfs/name</value>
 </property>
 <property>
 <name>dfs.datanode.data.dir</name>
 <value>file:/opt/hadoop-2.6.0/tmp/dfs/data</value>
 </property>
 <property>
 <name>dfs.permissions.enabled</name>
 <value>false</value>
 </property>
</configuration>

# vim /opt/hadoop-2.6.0/etc/hadoop/mapred-site.xml

<configuration>
<property>
 <name>mapreduce.framework.name</name>
 <value>yarn</value>
 </property>
 <property>
 <name>mapred.job.tracker</name>
 <value>192.168.208.110:10020</value>
 </property>
</configuration>

# vim /opt/hadoop-2.6.0/etc/hadoop/yarn-site.xml

<configuration>
<property>
 <name>yarn.nodemanager.aux-services</name>
 <value>mapreduce_shuffle</value>
 </property>
</configuration>

2. eclipse运行mapreduce程序

 hdfs://192.168.208.110:9000/tmp/input
 hdfs://192.168.208.110:9000/tmp/output