I have a cluster with 2 Master and 3 slaves .
The NN and RM are configured in HA mode .
My 3 Journal Node are in : Master1 , Master2 and slave1 .
My Zookeper are in : Master1 , Master2 and Slave1 .
Ambari server is installed in Master1 .
In master2 , there is some History service (Spark and Yarn) , monitoring tools (Graphana) and zeeplin .
This is a tomporary topology because we are waiting for 3 additional edge to better manage master components .
Master2 crash , and we are forced to format it .
What's the best strategy to replace it ?
I didn't find a lot ressource about decomminsioning Master node (Standby).
Thanks in advance .