What is Disk Balancer in Apache Hadoop?
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Can hbase run without hadoop?
What is IdentityMapper?
How to come out of the insert mode?
What is the functionality of jobtracker in hadoop?
What is the InputFormat ?
What hadoop does in safe mode?
Explain the benefits of block transfer?
What is 'Key value pair' in HDFS?
How to resolve small file problem in hdfs?
Give the use of the bootstrap panel.
What is hadoop framework?
Input Split & Record Reader and what they do?