For a Hadoop job, how will you write a custom partitioner?
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What is the function of mapreduce partitioner?
Describe what happens to a mapreduce job from submission to output?
what is NameNode in Hadoop?
Explain what is shuffling in mapreduce?
What is the role of recordreader in hadoop mapreduce?
What is the input type/format in MapReduce by default?
Clarify what is shuffling in map reduce?
What is map/reduce job in hadoop?
How hadoop mapreduce works?
how can you debug Hadoop code?
What are ‘reduces’?
What are ‘maps’ and ‘reduces’?
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