If datanodes increase, then do we need to upgrade namenode?
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What is the non dfs used?
What is the number of default partitioner in hadoop?
Name the operating system(s) which are supported for production hadoop deployment?
What is High Availability feature in Hadoop2?
For using hadoop list the network requirements?
Can you explain textinformat?
How can we create a hadoop cluster from scratch?
Is it possible to have hadoop job output in multiple directories? If yes, how?
How many job tracker processes can run on a single Hadoop cluster?
What is the key difference between NameNode and DataNode in Hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
Mention what is distributed cache in hadoop?
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