What is the difference between TextInputFormat and KeyValueInputFormat class?
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What are the most common InputFormats in Hadoop?
Which modes can Hadoop be run in? List a few features for each mode?
What happen if a datanode loses network connection for a few minutes?
What are the important features of hadoop?
Can you explain combiner?
How to restart NameNode or all the daemons in Hadoop?
Why Hadoop performs replication, although it results in data redundancy?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
List of the some best tools that can be useful for data-analysis?
What happens when two clients try to access the same file in the hdfs?
How can you native libraries be included in yarn jobs?
Mention what daemons run on a master node and slave nodes?
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