DISTRIBUTED SYSTEM AND FAULT RECOVERY METHOD AND APPARATUS THEREOF, PRODUCT, AND STORAGE MEDIUM

The present invention discloses a distributed system and a fault recovery method and an apparatus thereof, a product, and a storage medium. The method comprises: a slave node and/or a master node obtains and stores a metadata mirror having a record of scheduling information and a system status of the master node at a certain time; the master node obtains and stores a redo log having a record of all operations of the master node after the certain time; and when a fault occurs in the master node, the master node invokes the metadata mirror and its corresponding redo log to execute fault recovery. When a fault occurs, the method enables a master node to quickly return to a pre-failure state by means of a previously recorded metadata mirror and redo log. La présente invention concerne un système distribué, un procédé de correction de défaut et un appareil associé, un produit et un support de stockage. Le procédé comprend les étapes suivantes : un nœud esclave et/ou un nœud maître obtiennent et stockent un miroir