📅  最后修改于: 2022-03-11 14:59:18.835000             🧑  作者: Mango
Bigdata:
secondary namenode vs standby namenode:
The duties of standby namenode is similar to Secondary namenode
where it keeps the track of active namenode activity and take snapshot
periodically. Here, in case of active namenode failure,
standby namenode automatically takes the control and becomes active.
This way user will not notice the failure in namenode