Improved Epoch Expiry and Load Handling Mechanism for RAPID - The Fast Data Update Protocol in Erasure Coded Storage Systems

Erasure coding techniques provides significant fault tolerance with reduced storage overhead in comparison with replication. Fast data update strategies in erasure coded storage systems are needed to handle the big data and cloud applications involving frequent data updates. Research work presented here focus on the performance enhancement of RAPID protocol for fast data update. In this paper we present a method to identify low load for epoch firing. In addition, a method has been put forward for firing epoch on heavy load. In the third contribution, we implement a scheme to reduce the heavy load on the storage system due to simultaneous epoch firing of multiple files.