Method and system for servicing query requests using revisions maps

A non-transitory computer readable medium comprising computer readable program code, which when executed by a computer processor enables the computer processor to perform a method for servicing query requests, the method comprising:

• making a first determination, by a query node and in response to a query request, that a user data sub-region associated with a query request, wherein the user data sub-region is one of a plurality of user data sub-regions;
• obtaining, in response to the first determination and using a population table, a revisions map, wherein the revisions map specifies a version of the user data sub-region;
• and
• servicing the query request using the revisions map and data associated with the version of the user data sub-region,
• wherein obtaining the revisions map comprises:
• making a second determination to determine whether a dataspace associated with the user data sub-region is associated with the query node;
• in response to determining during the second determination that the dataspace associated with the user data sub-region is not associated with the query node:
• making a third determination that a second query node is associated with the dataspace;
• in response to the third determination, issuing a revisions map request to the second query node, wherein the population table is stored on the second query node;
• receiving, in response to the revisions map request, a revisions map response;
• and
• generating revisions map using the revisions map response, wherein the revisions map specifies a most recent version of the user data sub-region.