The members of Catherine's product development team, by contrast, had to be Integrators (ensuring integration across the functions), Execution Drivers (committing to and achieving goals within their functions) and Diplomats (communicating, securing resources, and building support with external constituencies).
Then function invocations via f.remote will immediately return futures (a future is a reference to the eventual output), and the actual function execution will take place in the background (we refer to this execution as a task).
Users are often unable to understand the way certain functions work because they cannot perceive the effects of the functions' execution.
The system consists of a user interactive interface, a product model-processing module, a function execution module, a data recording and process analyzing module.
The diagram below, Figure 2(a), shows the call-tree of function execution in the application-tier as well as data-tier query plans at the leaves.
The optimizer will choose a plan having the least cost given both the optimizer's choice of table placement and function execution placement (for the application-tier).
The figure shows the call-tree of function execution in the application-tier as well as data-tier query plans at the leaves.
Let App V,E) represent a model of the application, where forall v ∈ V, v corresponds to a function execution in the application.
Fourth, since the trade-offs on function placement depend on the placement of data and vice-versa, we need a model that can reason simultaneously about both application-tier function execution and query plan execution.
Based on the results, cross-tier partitioning provides more flexibility for moving function execution to the cloud and can significantly increase performance for a hybrid deployment of an application.
The technical details of extending application-tier partitioning to integrate the data-tier are motivated by four requirements: (i) weighing the benefits of distributing queries, (ii) comparing the trade-offs between join orders, (iii) taking into account intra-request data-dependencies and (iv) providing a query execution model comparable to application-tier function execution.
