What is the input type/format in MapReduce by default?
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How many Mappers run for a MapReduce job?
What is MapReduce?
What is difference between an input split and hdfs block?
Explain what combiners are and when you should use a combiner in a mapreduce job?
What is the input type/format in MapReduce by default?
What are the benefits of Spark over MapReduce?
What is optimal size of a file for distributed cache?
What do sorting and shuffling do?
Define the purpose of the partition function in mapreduce framework
Compare Pig vs Hive vs Hadoop MapReduce?
What are the various input and output types supported by mapreduce?
How to set the number of mappers for a MapReduce job?
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