How to compress mapper output in Hadoop?
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What is shuffleing in mapreduce?
What is a distributed cache in mapreduce framework?
Explain what is “map” and what is "reducer" in hadoop?
How do reducers communicate with each other?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
What does a split do?
what are the basic parameters of a Mapper?
What is the difference between RDBMS with Hadoop MapReduce?
What are advantages of Spark over MapReduce?
How to overwrite an existing output file during execution of mapreduce jobs?
Explain the input type/format in mapreduce by default?
Mention Hadoop core components?
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