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What is the use of context object?
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Have you ever used counters in hadoop?
How would an hadoop administrator deploy various components of hadoop in production?
What are the different commands used to startup and shutdown Hadoop daemons?
What is a commodity hardware? Does commodity hardware include RAM?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
Can you explain the common input formats in hadoop?
What are input format, input split & record reader and what they do?
Do we need to place 2nd and 3rd data in rack 2 only?
Can hadoop replace relational database?
What is the job tracker role in hadoop?
What are the core methods of a Reducer?
How analysis of Big Data is useful for organizations?
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