You should note that when a new feature is installed to a device, the Lotus® Expeditor environment is not usually restarted. However, in some instances, restarting is necessary for a plug-in to be utilized by other plug-ins.
For instance, if a plug-in needs to be early started or configured, or if other plug-ins do not listen for the availability of a service being installed. These are situations only the developer of the plug-in can recognize. Therefore, if your plug-in requires a restart of the platform, you must notify the feature installer by providing a feature Install Handler. This can be specified in your feature XML. Be aware that the install handler does not necessarily need to do anything. The presence of the handler alone indicates that the Lotus Expeditor environment should be restarted after the feature is installed.
For more information on installer handlers, refer to the Eclipse documentation: Platform Plug-in Developer Guide > Reference > Other reference information > Feature manifest
Parent topic: Packaging and deploying applications: XPD622