What is shuffling and sorting in Hadoop MapReduce?
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how indexing in HDFS is done?
How do reducers communicate with each other?
When is it not recommended to use MapReduce paradigm for large scale data processing?
Compare Pig vs Hive vs Hadoop MapReduce?
What is sqoop in Hadoop ?
What happen if the number of the reducer is 0 in MapReduce?
Can there be no Reducer?
Explain what combiners are and when you should use a combiner in a mapreduce job?
what are the basic parameters of a Mapper?
How many Mappers run for a MapReduce job?
What are the key differences between Pig vs MapReduce?
What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?
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