Abstract
Erasure codes are widely used in distributed key-value (KV) storage systems to enhance the data reliability. However, load balance of storage nodes is a well-known challenge when deploying such erasure-coded storage systems in cloud computing and information service scenarios. To solve the above problems, we propose a large-scale load balance scheme for erasure-coded KV storage systems. By adding the control nodes to storage systems, our scheme efficiently obtains current states of the storage nodes. To improve the utilization of network bandwidth, we design a multiple-coded shard transmission proposal. Based on data volume of write requests, we further provide an efficient hybrid writing scheme. Finally, we implement a prototype erasure-coded storage system and conduct extensive experiments to verify the efficiency of our scheme.
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