3. The data query system of claim 2 , wherein, the data query system further comprises a query component number distributer and a load balance controller; wherein, the query component number distributer is configured to distribute to the query component a unique query component number that is not occupied by other query components when the query component is started; the load balance controller is configured to send a starting instruction to the query component to instruct the query component to start during a running process of the data query system.
3. The data query system of claim 2 , wherein, the data query system further comprises a query component number distributer and a load balance controller; wherein, the query component number distributer is configured to distribute to the query component a unique query component number that is not occupied by other query components when the query component is started; the load balance controller is configured to send a starting instruction to the query component to instruct the query component to start during a running process of the data query system. 4. The data query system of claim 3 , wherein, the load balance controller is configured to send the starting instruction to the query component in the following way: sending the starting instruction to the query component according to a received control command of a user, or the load balance controller is further configured to set a starting threshold according to a running index of the data query system; and the load balance controller is configured to send the starting instruction to the query component in the following way: the load balance controller monitoring a running state of the data query system, and sending the starting instruction to the query component if the running index of the data query system reaches the starting threshold.