What is the use of context object?
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What do you understand by a closure in scala?
Can you define udf?
If datanodes increase, then do we need to upgrade namenode?
What is the non dfs used?
What are the actions followed by hadoop?
What is the NameNode port number?
What is KeyValueTextInputFormat in Hadoop?
Can you define a checkpoint?
Name the operating system(s) which are supported for production hadoop deployment?
How to debug Hadoop code?
What is the number of default partitioner in hadoop?
What is heartbeat in hadoop?
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