@Yee Zee Please refer to the previously shared detailed steps to test this scenario. This works for any Abrupt Termination of the component (either due to host reboot or if somehow the process was killed abruptly). As mentioned earlier that Auto start of a component is based on its current state and "desired state". Which means if you stop a component using Ambari API Or using Ambari UI then you wont see the recovery because in that case the ambari DB will have the correct info. ... View more