hadoop伪分布式安装&启动HDFS

  hadoop是基于java编写的分布式框架，要安装hadoop，必须先安装java的开发环境html jdk下载java http://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.htmlnode hadoop官网下载linux http://www.apache.org/dyn/c

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