When closed, the “left-nav” menu is a single column of icons (Fig. 1).
The icon in blue indicates the active display; its siblings’ and parent icons are show in light gray; and a light gray horizontal line separates the active display’s siblings and parent from the other main menu items.
To open the left-nav menu, mouse over it or click a menu item; see Fig. 2.
An up arrow (^) shows which menu option is open. Here it’s the Dashboards menu:
The default Pepperdata Dashboard is listed first, identified by the icon.
Next (for YARN environments) is your personalized, My Dashboard, which you can configure to show data for specific user names and queues; it is identified by the icon.