Explain what is sqoop in Hadoop ?
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What are the steps to submit a Hadoop job?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Are Namenode and job tracker on the same host?
What is the main purpose of HDFS fsck command?
How can you overwrite the replication factors in HDFS?
Can you tell us more about ssh?
What does ‘jps’ command do?
What do you know about nlineoutputformat?
What is yarn in hadoop?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
How hdfa differs with nfs?
How do you categorize a big data?
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