What is the basic difference between traditional RDBMS and Hadoop?
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What sorts of actions does the job tracker process perform?
Explain what is namenode in hadoop?
Explain what is hadoop?
How would you check whether your NameNode is working or not?
Explain the Single point of Failure in Hadoop?
Name the operating system(s) which are supported for production hadoop deployment?
What happens when two clients try to access the same file in the hdfs?
Where are Hadoop’s configuration files located?
What is Mapper? How can we compress Mapper output in Hadoop?
In hadoop_pid_dir, what does pid stands for?
What is a Backup node in Hadoop?
List out some common problems faced by data analyst?
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