@Anshul Sisodia In YARN HA, the property "yarn.resourcemanager.address" is redundant and instead "yarn.resourcemanager.address.X" is the one which is used. . 1.) Ambari UI for YARN, shows only the property - yarn.resourcemanager.address And it uses port 8050 by default. . 2.) In YARN UI, for the yarn configuration, the property is : yarn.resourcemanager.address.X yarn.resourcemanager.address.Y and they are using port 8032 by default. . Ambari UI does not explicitly shows "yarn.resourcemanager.address.X" or "yarn.resourcemanager.address.Y", rather only shows "yarn.resourcemanager.address". . In case if the requirement is to use a different port for the YARN HA ( other than 8032 ), then we can add "yarn.resourcemanager.address.X" and "yarn.resourcemanager.address.Y" in Ambari UI for customer yarn configuration. . Hope this information helps! Happy Hadooping 🙂 ... View more

@Kartik Vashishta Downloading Sandbox and performing tasks mentioned at below URL will be sufficient for HDPCA exam. http://hortonworks.com/training/class/hdp-certified-administrator-hdpca-exam/ We also have an option to give practice test on AWS. Please refer below URL for practice test guide. http://hortonworks.com/wp-content/uploads/2015/04/HDPCA-PracticeExamGuide-1.pdf Hope this information helps! All the best! 🙂 ... View more

@Ramachandra Sedimbi Desktop is not available in HDP Sandbox by default. You can directly connect to Ambari UI by hitting http://127.0.0.1:8080 from your local machine's browser. If you want to install Desktop you can do it using installing gnome packages or VNC. Please refer below URL's For Gnome installation - http://www.idevelopment.info/data/Unix/Linux/LINUX_AddGNOMEToCentOSMinimalInstall.shtml For VNC installation - https://github.com/hortonworks-gallery/ambari-vnc-service#connect-to-vnc-server Hope this information helps! Happy Hadooping 🙂 ... View more

@Michael Dennis "MD" Uanang Please refer below link for hue installation on Ubuntu http://gethue.com/hadoop-hue-3-on-hdp-installation-tutorial/ ... View more

@vinita goyal 1. Please login to ambari UI by hitting http://127.0.0.1:8080 2. Enter username - admin and password - admin 3. In the left pane you can find Ambari Metrics service name 4. Select Ambari Metrics 5. On the top right under service action, you can start/stop/restart ambari metrics Please refer below screenshot ... View more