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Explain about the partitioning, shuffle and sort phase
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How can we assure that the values regarding a particular key goes to the same reducer?
what is NameNode in Hadoop?
What is Distributed Cache in the MapReduce Framework?
What happens when the node running the map task fails before the map output has been sent to the reducer?
what is distributed cache in mapreduce framework?
What is heartbeat in hdfs?
what are the most common input formats defined in Hadoop?
What are the configuration parameters in the 'MapReduce' program?
Whether the output of mapper or output of partitioner written on local disk?
What is OutputCommitter?
Can there be no Reducer?
How can you add the arbitrary key-value pairs in your mapper?
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