HDFS部分:8020端口,9000端口和50070端口号,50090,9083,2181,6379的区别
8020端口:在cd/opt/sxt/hadoop-2.6.5/etc/hadoop/coresite.xml下的配置:dfs.namenode.rpc-address.mycluster.nn1node01:80208020是namenode节点active状态下的端口号;9000端口:是fileSystem默认的端口号:在cd/opt/sxt/hadoop-2.6.5/etc/hadoop/c