Hadoop缺省端口列表

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