NM status during RM failover

[Dong Ye]

Hi, All:

      I have a question, in the high availability resource manager
scenario, how does the states of NodeManagers change if a new leader RM is
elected? We observe a drop of NumActiveNodes metric when fails over on a
new RM. Is that normal? Any documentation explains how the NM states will
change? RM version is 2.8.5.

Thanks.
Have a nice day!