Research On Agricultural Data Cloud Storage Based Oil Distributed File System

At present, China’s traditional agriculture is transforming to modern agriculture, digitalagriculture and information technology.“2006-2020national informatization developmentstrategy", points out that "rural important priority to the construction of information systemstrengthens information resources shared services ability.” With the continuous deepeningof China’s agricultural information construction, various regions of our nation have builttheir own websites and agricultural information service station. Types of agriculture datasource have shown up the explosive growth, and had the characteristics of diversity andisomerization. Currently, we can purchase high-end and expensive storage and server tomanage these data; however, in the future, it will represent the situation that there is noalone device that can store so much data. In addition, since agriculture data involves manyareas and has the characteristic of regional and seasonal, Chinese agricultural informationsources are distributed in the PC、server and data storage device of different regions. Thereis little connection between the various regions, making the agricultural informationresources exist independently, forming an “islands of information”, and the capability ofshare is poor. So the most important thing is how to solute the bottleneck problem ofagricultural information.This paper first showed the purpose and significance of the study of agricultural datacloud storage. It also made summary of the cloud storage application at home and abroad.Secondly, the paper made a comparison of the features of some file systems. Finally, theauthor determined to use the HDFS file system to design the distributed file system.Distributed file system mainly adopts the file backup, load balancing and concurrencycontrol these three technologies. We realized the data redundancy by researching how toform multiple files duplicate and store them on different equipment, which can make thesystem safe and reliable, and avoid the phenomenal that the file is inaccessible for thereason of the failure of a machine. It provided the basis for load balancing. By researchingthe management of uploading and downloading files, we made the file storage on each nodeto more balanced and the access to files being bypassed to different node effectively, and wecan improve the system’s function. By researching the concurrency of file transformationand the concurrency of remote call, we realized the concurrency control of the cloud storagesystem.On this basis, we designed the cloud storage file system of the agricultural data basedon the distributed file system. The cloud storage system is developed by Java; the data is stored by Oracle. The various manipulation functions of the agriculture file data and systemmanagement functions were realized; storage and retrieval of the agricultural file dataresources in accordance with the unified standard were realized; a large number ofagricultural file data resources’ problem of dispersion and poor sharing was solved;Technically, cloud storage technology used in agricultural data management is relativelynew...