After creation and startup of the hadoop namenode, you can only connect to the namenode via hostname and not IP.
EX. hostname for box is sunsystem07, ip is 10.120.16.99 If you use the following url, "hdfs://10.120.16.99", to connect to the namenode, the following message will be printed: Wrong FS: hdfs://10.120.16.99:9000/, expected: hdfs://sunsystem07:9000 You will only be able to connect successfully if "hdfs://sunsystem07:9000" is used. It seems reasonable to allow connection either by IP or name. Is there a reason for this behavior or is it a bug?