Can you define a checkpoint?
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Give a brief overview of Hadoop history?
What is the job tracker role in hadoop?
What is the most widely recognized info formats characterized in hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
How many maps are there in a particular job?
What is the difference between TextInputFormat and KeyValueInputFormat class?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
Give me an example of document database ?
What does block mean?
Can you explain sequence file in hadoop?
Have you ever used counters in hadoop?
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