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To shorten the networking delay from MapTracker to ReduceTracker has attractive potential to gain high performance shuffle for MapReduce. As the original MapReduce shuffle has no locality-aware feature when assigning reduce-tasks over computing nodes, we plan to present a similarity-based distance in the proposed Cloud Node Space to evaluate distance between two computing nodes in data center. Then,...
Though current workflow systems, known as the major task managing tool in data-center, use UNIX-based user/group authorization mechanisms to defend unauthorized operations, the information in workflow systems, such as DAG (Directed Acyclic Graph), could be easily exposed to any user-level malicious monitor. In this paper, we propose a type of side channel attack to data-center workflow information...
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