What is the difference between map and reduce?
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What are the primary phases of a Reducer?
Explain slot in Hadoop Map-Reduce v1?
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When Namenode is down what happens to job tracker?
What do you understand by the term Straggler ?
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What is difference between an input split and hdfs block?
What happens when the node running the map task fails before the map output has been sent to the reducer?
What is the inputsplit in map reduce software?
What is Counter in MapReduce?
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