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

Claim 4:
5. A method, comprising:
receiving, at a first query engine, a query to a data set stored in a common format in a data store wherein the first query engine is communicatively coupled to the data store 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;
providing, by the first query engine, the second query engine with the consistent view of the data set identified for the query;
applying, by the second query engine, the one or more changes of the consistent view of the data set provided by the first query engine when evaluating data obtained from the data set in the common format at the data store, via the second network connection, 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, by the first query engine, a result of the query based, at least in part, on a result of performing the portion of the query at the second query engine.