Options to restart the Hue service
Restarting the Hue service is necessary after upgrading CDP or making configuration changes to the Hue service. You can restart Hue in regular or rolling restart mode. Rolling restart reduces the service downtime to approximately 80 to 90 seconds.
You can restart the Hue service independently or as a part of the cluster restart. When you
restart the Hue service normally, Hue can become unavailable for an average of 30 minutes from
the restart time (this could vary depending on the number of services in your cluster). When you
restart the cluster containg the Hue service, Hue is stopped first among other services in the
cluster and restarted at the end. To reduce the service downtime, Cloudera recommends that you
Rolling Restart option.
Restarting the Hue service independently in rolling restart mode
- Go to corresponding to the Hue service and then click Rolling Restart, or and click
- Go to and click .
|Restart filters||Restart roles with stale configuration only||Select this option to restart Hue if you have updated the Hue configuration.|
|Restart roles with the old software version only||Select this option to restart Hue if you have upgraded the cluster.|
|Role types to restart||Kerberos Ticket Renewer||Selected by default. Restarts the Kerberos Ticket Renewer role.|
|Load Balancer||Selected by default. Restarts the Load Balancer role after the Kerberos Ticket Renewer.|
|Hue Server||Selected by default. Restarts the Hue Server role after the load balancer.|
When you restart Hue, Hue’s non-worker roles, such as the load balancer, Kerberos ticket renewer, and Hue server restart one after the other.
Restarting a CDP cluster containing the Hue service in the rolling restart mode
To restart an HA cluster containing the Hue service in the rolling restart mode, go to corresponding to your cluster name and select Rolling Restart. You see the Rolling Restart modal with the list of services that support rolling restart.and click