Can you explain combiner?
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What is KeyValueTextInputFormat in Hadoop?
What is the basic difference between traditional RDBMS and Hadoop?
What does rack awareness algorithm means?
What do you mean by the NameNode High Availability in hadoop?
Mention what is the difference between an rdbms and hadoop?
Explain what is hadoop?
Define a record reader?
What is the best practice to deploy the secondary name node?
What mode(s) can hadoop code be run in?
Where is hadoop-env.sh file present?
What are the parameters of mappers and reducers?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
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