What is a partitioner and how the user can control which key will go to which reducer?
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List the configuration parameters that have to be specified when running a MapReduce job.
What are the identity mapper and reducer in MapReduce?
What are the four essential parameters of a mapper?
How does MapReduce framework view its input internally?
What is the Hadoop MapReduce API contract for a key and value Class?
How to overwrite an existing output file during execution of mapreduce jobs?
What is heartbeat in hdfs? Explain.
What are the data components used by Hadoop?
What do you understand by mapreduce?
When should you use sequencefileinputformat?
Define the purpose of the partition function in mapreduce framework
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
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