Restarting Services and Instances after Configuration Changes
If you change the configuration properties after you start a service or instance, you may need to restart the service or instance to have the configuration properties become active.
If you change configuration properties at the service level that affect a particular role only (such as all DataNodes but not the NameNodes), you can restart only that role; you do not need to restart the entire service. If you changed the configuration for a particular role instance (such as one of four DataNodes), you may need to restart only that instance.
- Follow the instructions in the topics Restarting a Service or Starting, Stopping, and Restarting Role Instances.
- If you see a Finished status, the service or role instances have restarted.
- Go to the tab.