I´m planning to use NN HA and I have a question about fencing:
when you run this command:
hdfs haadmin -failover namenode01 namenode02
the first namenode01 gets allways fenced? or simply gets inactive?
As far as I know the standby nanemode makes the checkpoint task for the
active namenode, so what happens when you fence a namenode, you only have a
namenode, who does the checkpoint task in this scenario?
Thanks in advance,