Explain the core methods of the reducer?
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What is pseudo-distributed mode?
Can you explain the common input formats in hadoop?
Define a record reader?
Mention how hadoop is different from other data processing tools?
is there a standard procedure to deploy hadoop?
What daemons run on master nodes?
What is the command to change the replication factor ?
Give a brief overview of Hadoop history?
Explain how can you check whether namenode is working beside using the jps command?
Do we require two servers for the namenode and the datanodes?
Mention what is the data storage component used by hadoop?
What are some typical functions of job tracker in hadoop?
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