what are the nodes in the Hadoop cluster?
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Can you explain how do ‘map’ and ‘reduce’ work?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Define a combiner?
How we can change Replication factor when Data is on the fly?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
How many instances of JobTracker can run on a Hadoop Cluser?
Does the hdfs client decide the input split or namenode?
What is Row Key?
What are the Basics of Hadoop?
What is a Combiner?
What is the difference between HDFS and NAS ?
What is your favourite tool in the hadoop ecosystem?
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