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HomeDatabaseMysql Tutorialhadoop2.2.0 ubuntu

伪分布版可以参考如下网址 http://blog.itpub.net/28883355/viewspace-1129891/ http://blog.csdn.net/yaofengzhuzhu/article/details/17116869 其中 注意要把openjdk 修改为 oraclejdk 首先apt-get remove 删除干净openjdk 然后不要apt-get install 从官网



伪分布版可以参考如下网址

http://blog.itpub.net/28883355/viewspace-1129891/

http://blog.csdn.net/yaofengzhuzhu/article/details/17116869


其中 注意要把openjdk 修改为 oraclejdk

首先apt-get remove 删除干净openjdk

然后不要apt-get install 从官网上下载sun jdk 然后放到 $JAVA_HOME所在的位置


输入jps,可以看到

hadoop_1@zjk-Lenovo-Product:/usr/local/hadoop/sbin$ jps
4947 Jps
4528 NodeManager
4339 ResourceManager
4200 SecondaryNameNode



1.  source

source命令也称为“点命令”,也就是一个点符号(.)。source命令通常用于重新执行刚修改的初始化文件,使之立即生效,而不必注销并重新登录。

用法: 

source filename 或 . filename

source命令就可以做到这一点,它的作用就是把一个文件的内容当成shell来执行
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