Compare Hadoop and RDBMS?
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What is job tracker in Hadoop?
What happens when two clients try to access the same file in the hdfs?
How can one write custom record reader?
We have already sql then why nosql?
What does rack awareness algorithm means?
What happens if you don?t override the mapper methods and keep them as it is?
Explain is it possible to search for files using wildcards?
How to restart NameNode or all the daemons in Hadoop?
What is the command to change the replication factor ?
Why does one remove or add nodes in a Hadoop cluster frequently?
What are some of the characteristics of Hadoop framework?
Which language is more suitable for text analytics? R or python?
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