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What is map/reduce job in hadoop?
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What are combiners? When should I use a combiner in my MapReduce Job?
Illustrate a simple example of the working of MapReduce.
What are ‘maps’ and ‘reduces’?
How to overwrite an existing output file during execution of mapreduce jobs?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What is sqoop in Hadoop ?
what is NameNode in Hadoop?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is a "map" in Hadoop?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
How many times combiner is called on a mapper node in Hadoop?
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