Default Namenode port of HDFS is 50070.But I have come across at some places 8020 or 9000

Question

When I setup the hadoop cluster, I read the namenode runs on 50070 and I set up accordingly and it\'s running fine.

But in some books I have come across name node ad

Answer 1

50070 is the default UI port for namenode . while 8020/9000 is the Inter Process Communicator port (IPC) for namenode.

Reference to IPC port : https://en.wikipedia.org/wiki/Inter-process_communication