Enable System Service Mode

The HBase component associated with Timeline Service 2.0 is installed in the system service mode only when the HDP 3.0 cluster meets the capacity requirements. The deployment of ats-hbase varies depending on whether you are deploying a new HDP 3.0 cluster or whether you are upgrading the cluster from HDP 2.6.5 to HDP 3.0.

On a new HDP 3.0 cluster that meets the capacity requirements for HBase to run in the system service mode, ats-hbase is automatically submitted to the default queue without any ACLs configured. Therefore, you must configure a separate queue for ats-hbase, assign capacity and the highest priority to the queue, set ACLs, and disable preemption on the queue.

On an HDP cluster that is upgraded from 2.6.5 to 3.0 and meets the capacity requirements for HBase to run in the system service mode, a separate zero-capacity queue is automatically created for the ats-hbase service. The queue is automatically configured with the required ACLs and priorities, and preemption is disabled. You must assign capacity to the particular queue and enable the system service mode so that ats-hbase is submitted to that queue.