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What is shuffleing in mapreduce?
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Clarify what combiners are and when you should utilize a combiner in a map reduce job?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
What is partitioning in MapReduce?
What is the Hadoop MapReduce API contract for a key and value Class?
What combiners are and when you should utilize a combiner in a map reduce job?
What is SequenceFileInputFormat?
What do you mean by data locality?
Why Mapreduce output written in local disk?
When Namenode is down what happens to job tracker?
What is Reduce only jobs?
Describe what happens to a mapreduce job from submission to output?
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