1. A method for routing a query performed on a query routing server using a same distributed file system and being connectable with a plurality of query performance engines sharing metadata, the plurality of query performance engines includes a first query performance engine and a second query performance engine which are different types of query performance engines, the method comprising: receiving, through a user input interface, a query and a criterion to select a query performance engine among a plurality of query performance engines; and determining, by a query routing server, one of the plurality of query performance engines based on the received criterion, wherein determining one of the plurality of query performance engines includes detecting a type of the received query to determine a query performance engine between the first query performance engine or the second query performance engine that is most optimized for the query type among the plurality of query performance engines, and wherein the query type is determined based on a query execution plan (QEP), the QEP including information for whether an operator included in the query is configured for parallel processing or whether there is another applicable operator more suitable for performing the query to replace the operator included in the query.
1. A method for routing a query performed on a query routing server using a same distributed file system and being connectable with a plurality of query performance engines sharing metadata, the plurality of query performance engines includes a first query performance engine and a second query performance engine which are different types of query performance engines, the method comprising: receiving, through a user input interface, a query and a criterion to select a query performance engine among a plurality of query performance engines; and determining, by a query routing server, one of the plurality of query performance engines based on the received criterion, wherein determining one of the plurality of query performance engines includes detecting a type of the received query to determine a query performance engine between the first query performance engine or the second query performance engine that is most optimized for the query type among the plurality of query performance engines, and wherein the query type is determined based on a query execution plan (QEP), the QEP including information for whether an operator included in the query is configured for parallel processing or whether there is another applicable operator more suitable for performing the query to replace the operator included in the query. 2. The method of claim 1 , wherein determining one of the plurality of query performance engines includes checking whether a query performance engine is predetermined by a user based on the received criterion to select a query performance engine.