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Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
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When should you use a reducer?
What is a "reducer" in Hadoop?
what are the most common input formats defined in Hadoop?
What is a distributed cache in mapreduce framework?
What is MapReduce? What are the syntax you use to run a MapReduce program?
Explain what is shuffling in mapreduce?
Explain what combiners are and when you should use a combiner in a mapreduce job?
How to set which framework would be used to run mapreduce program?
A number of combiners can be changed or not in MapReduce?
What is SequenceFileInputFormat?
Different ways of debugging a job in MapReduce?
What are the various configuration parameters required to run a mapreduce job?
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