A name of a submitted application is obtained. A determination is made that the name of the submitted application is same as a name of an existing application. In response to determining that the name of the submitted application is same as the name of the existing application: a predetermined disable command is triggered, where the predetermined disable command invokes an end function for each node in the existing application; for each particular node in the existing application, a particular process occupied by the particular node in the existing application is recycled when receiving execution completion information from the existing application; and a predetermined start command is triggered when the recycling is completed, where the predetermined start command starts a process for each node in the submitted application.