win7下安装hadoop
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先前已经通过cygwin使用总结和cygwin安装sshd服务并实现无密码登录搞定了cygwin,接下来就是正式安装hadoop了(注意这里是单节点的伪分布式)。
环境及软件准备:
win7(64位)
cygwin 1.7.9-1
jdk-6u25-windows-x64.zip
hadoop-0.20.2.tar.gz
1.安装jdk,并置java环境变量包括:JAVA_HOME,PATH,CLASSPATH
2.安装Hadoop,版本为0.20.2,我是直接放到/home目录下,并解压
tar –zxvf hadoop-0.20.2.tar.gz
3.配置Hadoop,需要修改hadoop的配置文件,它们位于conf子目录下,分别是hadoop-env.sh、core-site.xml、hdfs-site.xml 和mapred-site.xml
(1) 修改hadoop-env.sh:
只需要将JAVA_HOME 修改成JDK 的安装目录即可
export JAVA_HOME=/cygdrive/d/java/jdk1.6.0_25
(注意:路径不能是windows 风格的目录d:\java\jdk1.6.0_25,而是LINUX 风格/cygdrive/d/java/jdk1.6.0_25)
(2) 修改core-site.xml:(指定namenode)
<configuration><property> <name>fs.default.name</name> <value>hdfs://localhost:9000</value></property></configuration>
(3)修改hdfs-site.xml(指定副本为1)
<configuration><property> <name>dfs.replication</name> <value>1</value></property></configuration>
(4) 修改mapred-site.xml (指定jobtracker)
<configuration><property> <name>mapred.job.tracker</name> <value>localhost:9001</value></property></configuration>
4.验证安装是否成功,并运行Hadoop
(1) 验证安装
$ bin/hadoopUsage: hadoop [--config confdir] COMMANDwhere COMMAND is one of: namenode -format format the DFS filesystem secondarynamenode run the DFS secondary namenode namenode run the DFS namenode datanode run a DFS datanode dfsadmin run a DFS admin client mradmin run a Map-Reduce admin client fsck run a DFS filesystem checking utility fs run a generic filesystem user client balancer run a cluster balancing utility jobtracker run the MapReduce job Tracker node pipes run a Pipes job tasktracker run a MapReduce task Tracker node job manipulate MapReduce jobs queue get information regarding JobQueues version print the version jar <jar> run a jar file distcp <srcurl> <desturl> copy file or directories recursively archive -archiveName NAME <src>* <dest> create a hadoop archive daemonlog get/set the log level for each daemon or CLASSNAME run the class named CLASSNAMEMost commands print help when invoked w/o parameters.
(2) 格式化并启动Hadoop
bin/hadoop namenode –format
bin/start-all.sh
(3) 查看Hadoop
命令行查看:
$ jps1608 NameNode6572 Jps6528 JobTracker
(注意:win7下cygwin中DateNode和TaskTracker进程是无法显示的,好像是cygwin的问题)
网页查看:
http://localhost:50030
http://localhost:50070
(4) 关闭Hadoop
bin/stop-all.sh
嘿嘿,轻松搞定~_~
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