Fusioninsight tool is a set of health detection tools for technical support engineers and maintenance engineers. It can check the health status of cluster-related nodes and services, discover potential problems in the cluster in advance, and generate health check reports. It is convenient for technical support engineers and maintenance engineers to quickly understand the health status of the system.

Kerberos, as an authentication server center, can provide unified authentication services to all services in the cluster and secondary development applications of customers.

The ResourceManager adopts a high-availability solution. When the Active resourcemanager finds a fault, it can only start the standby resourcemanager through the built-in zookeeper and switch its state to active.

What is the physical storage unit of Region in HBase?

One Executor of Spark task can run multiple tasks at the same time.