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 address :

hdfs://localhost:9000/

or

hdfs://localhost:8020

What exactly is the proper number to set the port of namenode?

Answer 1

The default address of namenode web UI is http://localhost:50070/. You can open this address in your browser and check the namenode information.

The default address of namenode server is hdfs://localhost:8020/. You can connect to it to access HDFS by HDFS api. The is the real service address.