A computer-implemented method of executing a query in a network of data centres

摘要

Executing a query in a network of data centres comprises a preparation stage and an execution stage. The preparation stage includes each data centre providing information relating to data centre parameters and/or proximity, allowing arrangement of the data centres in a dynamic hierarchical cluster topology of a parent data centre and child data centres. Each child data centre has its own local data sequence which is to be processed by individual analysis tasks of the query. The child data centres together form a cluster of similar and/or proximate data centres, the cluster having a single parent data centre. The execution stage includes the parent data centre sending the tasks to the child data centres and the child data centres sending to the parent data centre a sequence of outcomes derived from the local data sequence and the tasks. Both a child data centre and its parent data centre cache tasks executed by the child and the sequence of outcomes of the tasks. This allows for the handling of wide-area geographically distributed analytics, such as big data analytics.