Is the secondary NameNode is the backup node?

Related questions

1. What is the difference between NAS and DAS in Hadoop cluster?
2. What is Hdfs safe mode?
3. What is the difference between a name node and a DataNode in HDFS?
4. What is DataNode?
5. What is checkpoint in HDFS?
6. What is data node and name Node?
7. What is the default input format in Hadoop?
8. Which files deal with small file problems?
9. Does Hdfs use zookeeper?
10. What is backup node in Hadoop?

Tags

1. #would
2. #supports
3. #download
4. #order
5. #since
6. #namenode
7. #state
8. #active
9. #namespace
10. #create
11. #checkpoint
12. #required
13. #edits
14. #already
15. #backup
16. #secondary
17. #files
18. #memory
19. #fsimage