What is difference between an input split and hdfs block?
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What counter in Hadoop MapReduce?
What is a RecordReader in Hadoop MapReduce?
Explain Working of MapReduce?
What is a mapreduce algorithm?
Explain the process of spilling in Hadoop MapReduce?
What happens when a datanode fails ?
Why comparison of types is important for MapReduce?
Explain what are the basic parameters of a mapper?
What is a map side join?
What happens when the node running the map task fails before the map output has been sent to the reducer?
In MapReduce, ideally how many mappers should be configured on a slave?
Different ways of debugging a job in MapReduce?
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