{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the application scenarios of the blockchain upgrade module for executing the exit upgrade command?","a":"Node failure recovery: When a node in the blockchain network fails and needs to rejoin the network, the exit upgrade  command can be used to make the node resynchronize data to keep consistency with other nodes that are running normally."}]}],"pr":"95c9546ff3257f113d51c7aeaf1b22fcb74ef71bb0f6f508b3b819635b223fe4"}