Task scheduling method and device

The embodiment of the invention discloses a task scheduling method, which is used for guaranteeing that work tasks in a distributed system can be successfully executed. The method of the embodiment of the invention comprises the following steps: determining a task to be operated, determining an estimated value of memory required by the task to be operated, determining a destination node, and scheduling the task to be operated to operate on the destination node, wherein the remaining memory of the destination node is not less than the estimated value. The embodiment of the invention carries out task scheduling according to the memory of the node, the node of which the remaining memory is greater than the memory required by the work task is used as the destination node for scheduling the work task, the memory of the destination node can be guaranteed to certainly meet the requirement of the work task scheduled on the destination node, and the work task can be guaranteed to successfully execute. The embodiment o