50030 mapred.job.tracker.http.address 描述:JobTracker administrative web GUI JOBTRACKER的HTTP服务器和端口 50070 dfs.http.address 描述:NameNode administrative web GUI NAMENODE的HTTP服务器和端口 50010 dfs.datanode.address 描述:DataNode control port (each DataNode listens on this port and registers it with the NameNode on startup) DATANODE控制端口,主要用于DATANODE初始化时向NAMENODE提出注册和应答请求 50020 dfs.datanode.ipc.address 描述:DataNode IPC port, used for block transfer DATANODE的RPC服务器地址和端口 50060 mapred.task.tracker.http.address 描述:Per TaskTracker web interface TASKTRACKER的HTTP服务器和端口 50075 dfs.datanode.http.address 描述:Per DataNode web interface DATANODE的HTTP服务器和端口 50090 dfs.secondary.http.address 描述:Per secondary NameNode web interface 辅助DATANODE的HTTP服务器和端口