Physical Sciences and Mathematics Commons^™

Fresh: Fair And Efficient Slot Configuration And Scheduling For Hadoop Clusters, Jiayin Wang, Yi Yao, Ying Mao, Bo Sheng, Ningfang Mi

Department of Computer Science Faculty Scholarship and Creative Works

Hadoop is an emerging framework for parallel big data processing. While becoming popular, Hadoop is too complex for regular users to fully understand all the system parameters and tune them appropriately. Especially when processing a batch of jobs, default Hadoop setting may cause inefficient resource utilization and unnecessarily prolong the execution time. This paper considers an extremely important setting of slot configuration which by default is fixed and static. We proposed an enhanced Hadoop system called FRESH which can derive the best slot setting, dynamically configure slots, and appropriately assign tasks to the available slots. The experimental results show that …

Freshwater Resource Supply Modeling For Developed And Undeveloped Watersheds, Kelly C. Gustafson

FIU Electronic Theses and Dissertations

Globally, the current state of freshwater resource management is insufficient and impeding the chance at a sustainable future. Human interference within the natural hydrologic cycle is becoming dangerously irreversible and the need to redefine resource managerial approaches is imminent.

This research involves the development of a coupled natural-human freshwater resource supply model using a System Dynamics approach. The model was applied to two case studies, Somalia, Africa and the Phoenix Active Management Area in Arizona, USA. It is suggested that System Dynamic modeling would be an invaluable tool for achieving sustainable freshwater resource management in individual watersheds. Through a series …