15. The computer-accessible storage medium as recited in claim 14 , wherein the program instructions are further executable to cause said query traffic director device to: identify multiple datasets of said datasets targeted by said given query dependent upon parsing said given query; and identify a target set including two or more query server computers of the plurality of query server computers coupled for access to at least one of the identified multiple datasets.
15. The computer-accessible storage medium as recited in claim 14 , wherein the program instructions are further executable to cause said query traffic director device to: identify multiple datasets of said datasets targeted by said given query dependent upon parsing said given query; and identify a target set including two or more query server computers of the plurality of query server computers coupled for access to at least one of the identified multiple datasets. 20. The computer-accessible storage medium as recited in claim 15 , wherein the instructions are further executable to cause said query traffic director device to convey said given query to each query server computer in said target set in a sequential fashion.