Patent ID: 11860869
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. One or more non-transitory, computer-readable storage media, storing program instructions that when executed on or across one or more computing devices cause the one or more computing devices to implement a first query engine that implements:
receiving a query to a data set stored in a common format in a data store communicatively coupled to the first query engine via a first network connection;
identifying, by the first query engine, at least a portion of the query to be performed at a second query engine that is a different type of query engine than the first query engine, wherein the first query engine and second query engine provide query processing for the data set stored in the common format in the data store, and wherein the second query engine is communicatively coupled to the data store over a second network connection different from the first network connection;
determining a consistent view of the data set comprising one or more changes to data of the data set stored in the data store;
sending a request to the second query engine to perform the portion of the query;
providing the second query engine with the consistent view of the data set identified for the query;
receiving, from the second query engine, a result from the portion of the query determined from an evaluation of data obtained from the data set in the common format at the data store via the second network connection that applied the one or more changes of the consistent view of the data set as part of performing the portion of the query, the obtained data comprising a current value not within the consistent view of the data set; and
returning a final result of the query based, at least in part, on the result received from the second query engine.