Final answer:
During maintenance mode, the Master node is temporarily taken offline for updates or repairs to ensure uninterrupted operations in a computer cluster.
Step-by-step explanation:
In a computer cluster, the Master node is responsible for managing and coordinating the activities of the other nodes in the cluster. During maintenance mode, the Master node is temporarily taken offline for updates, repairs, or any other necessary maintenance tasks.
This is done to ensure uninterrupted operations and to avoid any potential disruptions or downtime that may occur if the Master node is actively handling requests while undergoing maintenance.
For example, if a cluster is running a distributed database, maintenance mode can be invoked for the Master node to perform updates to the database software or hardware without affecting the availability and performance of the cluster as a whole.