What is distributed copy (distcp)?
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what happens when namenode goes down during file read operation in hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
Give me the examples of Columnar database ?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
Name the files which are used by the startup and shutdown commands?
Why slaves limited to 4000 in hadoop version 1?
How often do you need to reformat the namenode?
How Big is ‘Big Data’?
Which scala library is used for functional programming?
What is partitioning?
What are the common types of NOSQL data bases ?
What are the most common OutputFormat in Hadoop?
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