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Cloud storage services are pervasive nowadays. Many cloud storage services use distributed file systems as their backend storage systems. Some research results on file-size distribution of file systems show that file systems contain lots of small files. Therefore, this paper proposed a hybrid distributed file system based on Ceph and HDFS that can deliver satisfactory write throughputs for a cloud...
The primary-copy consistency model used in Ceph cannot satisfy the low latency requirement of write operation required by users. In this paper, we propose a weak consistency model, PROAR, based on a distributed hash ring mechanism to allow clients to only commit data to the primary node and synchronize data to replication nodes asynchronously in Ceph. Based on the distributed hash ring mechanism,...
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