what is difference between int and intwritable?
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what is difference between int and intwritable?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
Explain the basic architecture of Hadoop?
What is rack-aware replica placement policy?
What is a spill factor with respect to the ram?
How many instances of tasktracker run on a hadoop cluster?
What are the port numbers of namenode, job tracker and task tracker?
Can we do online transactions(oltp) using hadoop?
What are the steps to submit a Hadoop job?
How blocks are distributed among all data nodes for a particular chunk of data?
What if a namenode has no data?
How we can take Hadoop out of Safe Mode?
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