Specifically, we consider the following issues in our joint optimization.
Servers are equipped with limited storage and computation resources.
Each data chunk has a storage requirement and will be required by big data tasks.
The data placement and task assignment are transparent to the data users with guaranteed QoS.
Our objective is to optimize the big data placement, task assignment, routing and DCR such that the overall computation and communication cost is minimized.Our main contributions are summarized as follows: