Multi-dimensional interval query method and system based on cloud computing

Abstract

The invention provides a multi-dimensional interval query method based on cloud computing. The method includes the steps of index construction and multi-dimensional interval data query. The index construction step includes: automatically constructing and storing a distributed grid file index and metadata according to an externally entered index construction command. The multi-dimensional interval data query step includes: positioning a data block to be read, according to an externally entered query command and on the basis of the distributed grid file index and metadata, and automatically and evenly distributing reading requests to nods of a server cluster, parallelly processing query requests in the system, parallelly acquiring all query results, and collecting the results before returning to users. The invention further provides a multi-dimensional interval query system based on the distributed grid file index.

Description

technical field [0001] The invention relates to the field of multidimensional indexing of massive data, in particular to an index technology related to multidimensional interval query of massive data. Background technique [0002] In the smart grid, massive collection of data needs to be efficiently stored and quickly queried. Compared with the big data generated in the Internet field, such as social networks and search engines, the collected big data has unique characteristics: (1) high collection frequency; (2) mass collection terminals generate massive data; (3) collection The number of fields in each record is fixed; (4) It has distinct spatial and temporal characteristics. Not only that, the query for collection data also has unique characteristics: (1) Multi-dimensional interval query features are obvious; (2) The query dimension is generally fixed; (3) Aggregated values ​​(such as the total number of records, Sum, Max, Min, etc.) have a large proportion of inquiries...

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is to overcome the defects that the existing system cannot simultaneously meet the multi-dimensional interval query requirements, fast writing ability, and dynamic scalability of large data collection, and propose a multi-dimensional interval query method and system based on cloud computing

Images