What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
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What is a checkpoint?
What are the different types of Znodes?
What are the benefits of block transfer?
How to configure hadoop to reuse JVM for mappers?
Can we call vms as pseudos?
How hdfa differs with nfs?
Explain what is sqoop in Hadoop ?
On what basis name node distribute blocks across the data nodes?
What is Distributed Cache?
Define a namenode?
Is client the end user in HDFS?
How to come out of the insert mode?
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