What is a Distributed Cache in Hadoop?
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Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
What does conf.setmapper class do?
How many Mappers run for a MapReduce job?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
Mention Hadoop core components?
What is the input type/format in MapReduce by default?
List out Hadoop's three configuration files?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
How do you stop a running job gracefully?
What are the fundamental configurations parameters specified in map reduce?
What do sorting and shuffling do?
Why can aggregation not be done in Mapper in MapReduce?
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