hadoop集群安装部署（二）

一、配置hadoop集群 一共有7个文件要修改： hadoop-2.7.1/etc/hadoop/hadoop-env.sh hadoop-2.7.1/etc/hadoop/yarn-env.sh hadoop-2.7.1/etc/hadoop/core-site.xml hadoop-2.7.1/etc/hadoop/hdfs-site.xml hadoop-2.7.1/etc/hadoop/m

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