HDFS distributed metadata management research

Abstract. As it can provide high throughput data access, and easy to deploy on a cheap machine,Distributed File System HDFS is used widely.All HDFS file access requests are required by the metadata server node.so the single metadata server nodes often become the bottleneck of the whole system problem, this paper design a multi-node distributed metadata management solution in the directory Hash-based metadata storage strategy, proposed a protocol based on two-phase commit to ensure distributed metadata consistency. Experimental results show that the program can improve HDFS file system metadata management efficiency. 1