What is output format in hadoop?
How blocks are distributed among all data nodes for a particular chunk of data?
what is a datanode?
Give the use of the bootstrap panel.
What hadoop does in safe mode?
Is hadoop a memory?
What is IdentityMapper?
What is Hadoop serialization?
how can we change Replication Factor?
Explain the difference between NameNode
What is DistributedCache and its purpose?
Define streaming?
How is security achieved in Apache Hadoop?