DNS problem in BIG DATA
In Big data ecosystem all the nodes have hostname in a cluster, when we are trying to access ResoureManager, NodeManager, Application Master , Job History server , Spark UI , SparkHistroyServer we always change the hostname to IP address , each and every time we are doing it, especially when we trying to check job progress, metrics, job logs we are navigating from ResourceManager to ApllicationMaster/HistoryServer. Believe me its a headache to change it each and every time. There is a solution to overcome this problem. Follow below simple steps In Windows machine, open Notepad++ as Admin user Browse C:\Windows\System32\drivers\etc\hosts this file, edit file in Notepad++. Add ipaddress hostname to the file Save that file, now you can able to access the website without need to change hostname to IP address. Refer below hosts file opened in Notepad++ with highlighted area those entry are added now to access