The Customize Services screen presents you with a set of tabs that let you manage configuration settings for Hadoop components. The wizard attempts to set reasonable defaults for each of the options here, but you can use this set of tabs to tweak those settings. and you are strongly encouraged to do so, as your requirements may be slightly different. Pay particular attention to the directories suggested by the installer.
Hover your mouse over each of the properties to see a brief description of what it does. The number of tabs you see is based on the type of installation you have decided to do. In a complete installation there are nine groups of configuration properties and other related options, such as database settings for Hive and Oozie and admin name/password and alert email for Nagios. The install wizard has set reasonable defaults for all properties except for one in the Hive/HCat tab, one in the Oozie tab, and two in the Nagios tab. These four are marked in red and are the only ones you must set yourself. Click the name of the group in each tab to expand and collapse the display.
