Abstract: With the pretty rapid development of cloud computing,internet of things,mobile internet,and other technologies,mass data grows in those areas in violent speed.Big Data provides a possibility of handling mass data,which acts as a subversive technique.By the way,traditional relation database is no more effective of mass data that causes distributed database NoSQL to appear and evolve.Facing with actual and various difficulties,we designed and realized a new distributed big data management system (DBDMS),which is based on Hadoop and NoSQL techniques,and it provides big data real-time collection,search and permanent storage.Proved by some experiment,DBDMS can enhance the processing capacity of mass data,and very fits for mass log backup and retrieval,mass network packet grab and analysis,and other applied areas.

Key words: Big data,Distributed,Data storage,Data query,Hadoop,NoSQL