@Kartik Vashishta 1. You can have different "datanode configuration groups" created for each of datanode differing in configuration and all datanodes will contribute to HDFS size. 2. If you are worried about replication factor then by default HDFS will take care of it placing replicas randomly on datanodes. Definitely if the size of datanode is less then HDFS will give warning and if its almost filled you will not able to use the datanode for storage. Let me know if I get you correctly. ... View more

Thanks avijeet. I corrected this. ... View more

You can use as shown in below article - https://community.hortonworks.com/questions/23244/ranger-add-policies-via-rest-api.html ... View more

@J. D. Bacolod As per latest documentation Spark is currently not supported with ranger. There is no spark plugin available for ranger http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.4.2/bk_Security_Guide/content/configuring_mysql_for_ranger.html ... View more

Make sure the ambari port is 8080 in the url. --> http://127.0.0.1:8080 ... View more

@Praveen K Singh Sandbox does not comes by default with GUI. You need to open browser on your machine (and not from Sandbox) and try accessing the url. You can check if you have "elinks" package installed in Sandbox then you can issue below command from cli - # elinks http://127.0.0.1:8880/ Else if you want to access GUI the you can have "yum groupinstall 'X Window System' 'GNOME'" You do have option of configuring VNC server to remotely access GUI - pls check - https://www.howtoforge.com/vnc-server-installation-centos-6.5 ... View more