How to compress mapper output in Hadoop?
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What are the benefits of Spark over MapReduce?
For a job in Hadoop, is it possible to change the number of mappers to be created?
How to change a number of mappers running on a slave in MapReduce?
What are the configuration parameters in the 'MapReduce' program?
In Hadoop what is InputSplit?
Explain the input type/format in mapreduce by default?
How to submit extra files(jars, static files) for MapReduce job during runtime?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
Explain what combiners are and when you should use a combiner in a mapreduce job?
How do ‘map’ and ‘reduce’ work?
What comes in Hadoop 2.0 and MapReduce V2 YARN
Explain about the partitioning, shuffle and sort phase
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