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What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?
What is the difference between an inputsplit and a block?
Which are the three modes in which hadoop can be run?
What are the main components in Hadoop Eco-System and what are their functions ?
What is 'jps'?
How to create a user in Hadoop?
What are the limitations of Hadoop?
What is Combiner in Hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
How does hadoop achieve fault tolerance?
Why do the nodes are removed and added frequently in a hadoop cluster?
What does jps command do in Hadoop?
Is there another way to check whether Namenode is working?
What is the procedure for namenode recovery?
