What is a Heartbeat in Hadoop?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
What is a Backup node in Hadoop?
What do you mean by the NameNode High Availability in hadoop?
What is the default replication factor in Hadoop and how will you change it?
Why Hadoop performs replication, although it results in data redundancy?
What is Balancer in Hadoop?
What is active and passive NameNode in Hadoop?
How can one check whether NameNode is working or not?
How would you restart NameNode?
How NameNode tackle Datanode failures in Hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
What is meant by streaming access?
How to add/delete a Node to the existing cluster?
