Explain how jobtracker schedules a task?
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What happens when two clients try to access the same file in the hdfs?
What are the different modes in which we can configure/install Hadoop?
How often do you need to reformat the namenode?
How job tracker schedules an assignment?
What happen if number of reducer is set to 0 in Hadoop?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What does hadoop-env.sh do?
What is the difference between a hadoop database and relational database?
Explain the key benefits of using storm for real time processing?
What is 'jps'?
What do you mean by the NameNode High Availability in hadoop?
Compare Hadoop and RDBMS?
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