What do masters consist of?
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what is difference between int and intwritable?
What is a checkpoint?
What does ‘jps’ command do?
What do sorting do?
What is a heartbeat in HDFS?
Explain a simple Map/Reduce problem.
What will you do when NameNode is down?
What is the difference between traditional RDBMS and Hadoop?
Why do we use Hadoop?
What are the hadoop's three configuration files?
Define a job tracker?
Can Hadoop be compared to NOSQL database like Cassandra?
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