What is the role of the namenode?
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Why do the nodes are removed and added frequently in a hadoop cluster?
Which port does SSH work on?
How can you native libraries be included in yarn jobs?
What is Erasure Coding in Hadoop?
Explain what is a sequence file in hadoop?
What happen if a datanode loses network connection for a few minutes?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
What are the Hadoop features extended to its eco-system components ?
Can we write map reduce program in other than java programming language. How?
How will you write a custom partitioner for a Hadoop job?
How is the splitting of file invoked in Hadoop ?
What is the use of recordreader in hadoop?
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